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ObesityWeek 2022: What’s stopping effective treatment of obesity?
ObesityWeek 2022 is the largest international conference on obesity, with over 100 sessions, and coincides with the 40th anniversary of the Obesity Society. Being held Nov. 1-4, it is a hybrid meeting that participants can attend onsite in sunny San Diego or virtually.
“The meeting offers a wide perspective, from basic science, all the way to public policy on studies of treatment and prevention of obesity,” program planning chair for ObesityWeek, Kelly C. Allison, PhD, said in an interview.
The Presidential Plenary session on Nov. 1 will kick off the meeting with “a series of 10-minute rapid talks on cutting-edge topics in the field,” noted Dr. Allison, who is also director, Center for Weight and Eating Disorders, Hospital of the University of Pennsylvania, and professor of psychiatry, University of Pennsylvania, both in Philadelphia.
Among others, Ania M. Jastreboff, MD, PhD, will speak about “New developments in anti-obesity pharmacotherapy,” and Theodore K. Kyle, RPh, MBA, will discuss “Reducing barriers to treatment: Insurance coverage.”
“We’re seeing some pretty effective antiobesity medication, but still they are not being covered by many insurances,” said Dr. Allison. Some clinicians might be hesitant to prescribe antiobesity medications, remembering older drugs that were pulled from the market for health concerns, and some patients may also have concerns, she speculated. There is a need for greater education about the current antiobesity drugs.
In his presidential address, Dan Bessesen, MD, professor of medicine at the University of Colorado at Denver, Aurora, will discuss “Regulation of body weight and adaptive responses to weight loss.”
Pediatric obesity is a major focus of this year›s conference too, Allison noted.
At 8 a.m on Nov. 3, The Obesity Society, the World Obesity Federation, the European Association for the Study of Obesity, and Obesity Canada will present a joint symposium, “International innovations in pediatric obesity,” with speakers from Canada, Australia, and Ireland discussing ongoing paradigm shifts in the prevention and treatment of pediatric obesity.
Two hours later, at a joint symposium by the American Academy of Pediatrics/The Obesity Society, attendees will get a behind-the-scenes look at the making of the new AAP Obesity Clinical Practice Guideline for children and adolescents with obesity.
The conference tracks reflect the broad scope of this event: Track 1: Metabolism and Integrative Physiology; Track 2: Neuroscience; Track 3: Interventional and Clinical Studies; Track 4: Population Health; Track 5: Clinical/Professional Practice; Track 6: Policy/Public Health, and a subtrack: Eradicating Treatment Barriers.
Dr. Allison highlighted the following oral presentations and posters about antiobesity drugs:
- “Once-weekly subcutaneous semaglutide 2.4 mg in adolescents with overweight or obesity,” with an extended Q&A session, Nov. 2.
- “Clinical outcomes with medication use in tertiary pediatric weight management program,” by Enayet and colleagues. Poster 030.
- “The metabolically healthy obese paradigm and liver fat content in the Fels longitudinal study,” by Garza and colleagues Oral 055, Nov. 2.
- “Phase 3 clinical trial of metformin for treatment of COVID-19 in adults with overweight and obesity,” by Bramante and colleagues. Oral 067, Nov. 3. This trial was published in the (N Engl J Med. 2022;387:599-610).
- “Glucagon/GLP-1 receptor dual agonist BI 456906 reduces bodyweight in patients with type 2 diabetes,” by Rosenstock and colleagues. Oral-063, Nov. 3.
- “A randomized controlled trial of naltrexone and bupropion and behavior therapy for binge-eating disorder,” by Grilo and colleagues. Oral 066, Nov. 3.
And on Nov. 4, researchers will present four oral abstracts about the dual glucose-dependent insulinotropic polypeptide and glucagonlike peptide–1 (GLP-1) receptor agonist tirzepatide (Mounjaro), which is approved for type 2 diabetes and now has fast track designation for weight loss from the Food and Drug Administration. Oral abstracts 109, 110, 111, and 112 cover weight loss with tirzepatide across different age groups, body mass indexes, and comorbidities, as well as quality of life.
Dr. Allison also highlighted the following presentations that cover other diverse topics:
- Family-based treatment: “Pilot study to inform a randomized controlled trial of HeLP: Obesity prevention & treatment for the entire Hispanic family,” by Haemer and colleagues. Oral 029. November 2.
- Bariatric surgery: “Long-term outcomes of laparoscopic sleeve gastrectomy from 2010-2016: A nationwide cohort study,” Oral 014. Nov. 2.
- Prevention/public health: “Impact of positive and negative front-of-package food labels in a randomized experiment,” by Grummon and colleagues. Oral 068. Nov. 3.
- Time-restricted eating: “Effects of 8-hour time restricted eating for weight loss over 12 months,” by Gabel and colleagues. Oral 102. Nov. 4.
- Patient management: “Identifying interprofessional drivers of practice gaps in the management of patients with obesity,” by Robinson and colleagues. Poster 055.
On Nov. 4, researchers will present five winning papers that will be published in the December issue of the Obesity journal about GLP-1 agonists versus bariatric surgery; monoacylglycerol O-acyltransferase 1 in mice; a behavioral weight-loss intervention; the Canberra Obesity Management Service; and macronutrient (im)balance in an obesogenic environment.
“I’m always excited to hear some talks that are outside of my comfort area to understand the mechanisms of obesity better,” concluded Dr. Allison.
A version of this article first appeared on Medscape.com.
ObesityWeek 2022 is the largest international conference on obesity, with over 100 sessions, and coincides with the 40th anniversary of the Obesity Society. Being held Nov. 1-4, it is a hybrid meeting that participants can attend onsite in sunny San Diego or virtually.
“The meeting offers a wide perspective, from basic science, all the way to public policy on studies of treatment and prevention of obesity,” program planning chair for ObesityWeek, Kelly C. Allison, PhD, said in an interview.
The Presidential Plenary session on Nov. 1 will kick off the meeting with “a series of 10-minute rapid talks on cutting-edge topics in the field,” noted Dr. Allison, who is also director, Center for Weight and Eating Disorders, Hospital of the University of Pennsylvania, and professor of psychiatry, University of Pennsylvania, both in Philadelphia.
Among others, Ania M. Jastreboff, MD, PhD, will speak about “New developments in anti-obesity pharmacotherapy,” and Theodore K. Kyle, RPh, MBA, will discuss “Reducing barriers to treatment: Insurance coverage.”
“We’re seeing some pretty effective antiobesity medication, but still they are not being covered by many insurances,” said Dr. Allison. Some clinicians might be hesitant to prescribe antiobesity medications, remembering older drugs that were pulled from the market for health concerns, and some patients may also have concerns, she speculated. There is a need for greater education about the current antiobesity drugs.
In his presidential address, Dan Bessesen, MD, professor of medicine at the University of Colorado at Denver, Aurora, will discuss “Regulation of body weight and adaptive responses to weight loss.”
Pediatric obesity is a major focus of this year›s conference too, Allison noted.
At 8 a.m on Nov. 3, The Obesity Society, the World Obesity Federation, the European Association for the Study of Obesity, and Obesity Canada will present a joint symposium, “International innovations in pediatric obesity,” with speakers from Canada, Australia, and Ireland discussing ongoing paradigm shifts in the prevention and treatment of pediatric obesity.
Two hours later, at a joint symposium by the American Academy of Pediatrics/The Obesity Society, attendees will get a behind-the-scenes look at the making of the new AAP Obesity Clinical Practice Guideline for children and adolescents with obesity.
The conference tracks reflect the broad scope of this event: Track 1: Metabolism and Integrative Physiology; Track 2: Neuroscience; Track 3: Interventional and Clinical Studies; Track 4: Population Health; Track 5: Clinical/Professional Practice; Track 6: Policy/Public Health, and a subtrack: Eradicating Treatment Barriers.
Dr. Allison highlighted the following oral presentations and posters about antiobesity drugs:
- “Once-weekly subcutaneous semaglutide 2.4 mg in adolescents with overweight or obesity,” with an extended Q&A session, Nov. 2.
- “Clinical outcomes with medication use in tertiary pediatric weight management program,” by Enayet and colleagues. Poster 030.
- “The metabolically healthy obese paradigm and liver fat content in the Fels longitudinal study,” by Garza and colleagues Oral 055, Nov. 2.
- “Phase 3 clinical trial of metformin for treatment of COVID-19 in adults with overweight and obesity,” by Bramante and colleagues. Oral 067, Nov. 3. This trial was published in the (N Engl J Med. 2022;387:599-610).
- “Glucagon/GLP-1 receptor dual agonist BI 456906 reduces bodyweight in patients with type 2 diabetes,” by Rosenstock and colleagues. Oral-063, Nov. 3.
- “A randomized controlled trial of naltrexone and bupropion and behavior therapy for binge-eating disorder,” by Grilo and colleagues. Oral 066, Nov. 3.
And on Nov. 4, researchers will present four oral abstracts about the dual glucose-dependent insulinotropic polypeptide and glucagonlike peptide–1 (GLP-1) receptor agonist tirzepatide (Mounjaro), which is approved for type 2 diabetes and now has fast track designation for weight loss from the Food and Drug Administration. Oral abstracts 109, 110, 111, and 112 cover weight loss with tirzepatide across different age groups, body mass indexes, and comorbidities, as well as quality of life.
Dr. Allison also highlighted the following presentations that cover other diverse topics:
- Family-based treatment: “Pilot study to inform a randomized controlled trial of HeLP: Obesity prevention & treatment for the entire Hispanic family,” by Haemer and colleagues. Oral 029. November 2.
- Bariatric surgery: “Long-term outcomes of laparoscopic sleeve gastrectomy from 2010-2016: A nationwide cohort study,” Oral 014. Nov. 2.
- Prevention/public health: “Impact of positive and negative front-of-package food labels in a randomized experiment,” by Grummon and colleagues. Oral 068. Nov. 3.
- Time-restricted eating: “Effects of 8-hour time restricted eating for weight loss over 12 months,” by Gabel and colleagues. Oral 102. Nov. 4.
- Patient management: “Identifying interprofessional drivers of practice gaps in the management of patients with obesity,” by Robinson and colleagues. Poster 055.
On Nov. 4, researchers will present five winning papers that will be published in the December issue of the Obesity journal about GLP-1 agonists versus bariatric surgery; monoacylglycerol O-acyltransferase 1 in mice; a behavioral weight-loss intervention; the Canberra Obesity Management Service; and macronutrient (im)balance in an obesogenic environment.
“I’m always excited to hear some talks that are outside of my comfort area to understand the mechanisms of obesity better,” concluded Dr. Allison.
A version of this article first appeared on Medscape.com.
ObesityWeek 2022 is the largest international conference on obesity, with over 100 sessions, and coincides with the 40th anniversary of the Obesity Society. Being held Nov. 1-4, it is a hybrid meeting that participants can attend onsite in sunny San Diego or virtually.
“The meeting offers a wide perspective, from basic science, all the way to public policy on studies of treatment and prevention of obesity,” program planning chair for ObesityWeek, Kelly C. Allison, PhD, said in an interview.
The Presidential Plenary session on Nov. 1 will kick off the meeting with “a series of 10-minute rapid talks on cutting-edge topics in the field,” noted Dr. Allison, who is also director, Center for Weight and Eating Disorders, Hospital of the University of Pennsylvania, and professor of psychiatry, University of Pennsylvania, both in Philadelphia.
Among others, Ania M. Jastreboff, MD, PhD, will speak about “New developments in anti-obesity pharmacotherapy,” and Theodore K. Kyle, RPh, MBA, will discuss “Reducing barriers to treatment: Insurance coverage.”
“We’re seeing some pretty effective antiobesity medication, but still they are not being covered by many insurances,” said Dr. Allison. Some clinicians might be hesitant to prescribe antiobesity medications, remembering older drugs that were pulled from the market for health concerns, and some patients may also have concerns, she speculated. There is a need for greater education about the current antiobesity drugs.
In his presidential address, Dan Bessesen, MD, professor of medicine at the University of Colorado at Denver, Aurora, will discuss “Regulation of body weight and adaptive responses to weight loss.”
Pediatric obesity is a major focus of this year›s conference too, Allison noted.
At 8 a.m on Nov. 3, The Obesity Society, the World Obesity Federation, the European Association for the Study of Obesity, and Obesity Canada will present a joint symposium, “International innovations in pediatric obesity,” with speakers from Canada, Australia, and Ireland discussing ongoing paradigm shifts in the prevention and treatment of pediatric obesity.
Two hours later, at a joint symposium by the American Academy of Pediatrics/The Obesity Society, attendees will get a behind-the-scenes look at the making of the new AAP Obesity Clinical Practice Guideline for children and adolescents with obesity.
The conference tracks reflect the broad scope of this event: Track 1: Metabolism and Integrative Physiology; Track 2: Neuroscience; Track 3: Interventional and Clinical Studies; Track 4: Population Health; Track 5: Clinical/Professional Practice; Track 6: Policy/Public Health, and a subtrack: Eradicating Treatment Barriers.
Dr. Allison highlighted the following oral presentations and posters about antiobesity drugs:
- “Once-weekly subcutaneous semaglutide 2.4 mg in adolescents with overweight or obesity,” with an extended Q&A session, Nov. 2.
- “Clinical outcomes with medication use in tertiary pediatric weight management program,” by Enayet and colleagues. Poster 030.
- “The metabolically healthy obese paradigm and liver fat content in the Fels longitudinal study,” by Garza and colleagues Oral 055, Nov. 2.
- “Phase 3 clinical trial of metformin for treatment of COVID-19 in adults with overweight and obesity,” by Bramante and colleagues. Oral 067, Nov. 3. This trial was published in the (N Engl J Med. 2022;387:599-610).
- “Glucagon/GLP-1 receptor dual agonist BI 456906 reduces bodyweight in patients with type 2 diabetes,” by Rosenstock and colleagues. Oral-063, Nov. 3.
- “A randomized controlled trial of naltrexone and bupropion and behavior therapy for binge-eating disorder,” by Grilo and colleagues. Oral 066, Nov. 3.
And on Nov. 4, researchers will present four oral abstracts about the dual glucose-dependent insulinotropic polypeptide and glucagonlike peptide–1 (GLP-1) receptor agonist tirzepatide (Mounjaro), which is approved for type 2 diabetes and now has fast track designation for weight loss from the Food and Drug Administration. Oral abstracts 109, 110, 111, and 112 cover weight loss with tirzepatide across different age groups, body mass indexes, and comorbidities, as well as quality of life.
Dr. Allison also highlighted the following presentations that cover other diverse topics:
- Family-based treatment: “Pilot study to inform a randomized controlled trial of HeLP: Obesity prevention & treatment for the entire Hispanic family,” by Haemer and colleagues. Oral 029. November 2.
- Bariatric surgery: “Long-term outcomes of laparoscopic sleeve gastrectomy from 2010-2016: A nationwide cohort study,” Oral 014. Nov. 2.
- Prevention/public health: “Impact of positive and negative front-of-package food labels in a randomized experiment,” by Grummon and colleagues. Oral 068. Nov. 3.
- Time-restricted eating: “Effects of 8-hour time restricted eating for weight loss over 12 months,” by Gabel and colleagues. Oral 102. Nov. 4.
- Patient management: “Identifying interprofessional drivers of practice gaps in the management of patients with obesity,” by Robinson and colleagues. Poster 055.
On Nov. 4, researchers will present five winning papers that will be published in the December issue of the Obesity journal about GLP-1 agonists versus bariatric surgery; monoacylglycerol O-acyltransferase 1 in mice; a behavioral weight-loss intervention; the Canberra Obesity Management Service; and macronutrient (im)balance in an obesogenic environment.
“I’m always excited to hear some talks that are outside of my comfort area to understand the mechanisms of obesity better,” concluded Dr. Allison.
A version of this article first appeared on Medscape.com.
Diet high in plant omega-3s tied to better HF prognosis
Heart failure (HF) patients with high serum levels of alpha-linolenic acid (ALA) had a better prognosis than those with the lowest levels, in an observational study.
ALA is an omega-3 fatty acid that is found mainly in plants, including flaxseed, chia, walnuts, or canola oil.
“The most striking finding to us is the clear difference between patients at the bottom quartile compared to the other 75%, pointing to a threshold on the putative effect of ALA, reinforcing the notion that ‘one size does not fill all,’ ” Aleix Sala-Vila, PharmD, PhD, of the Hospital del Mar Medical Research Institute, Barcelona, told this news organization.The analysis, which was published online in the Journal of the American College of Cardiology, showed statistically significant reductions in all-cause death, cardiovascular (CV) death, and first HF hospitalization among those in the three upper quartiles of serum ALA levels, compared with those in the lowest quartile.
The team’s earlier finding that higher levels of serum phosphatidylcholine eicosapentaenoic acid (PC EPA) and ALA were associated with a lower risk of adverse events in patients with ST-segment elevation myocardial infarction prompted the current study, Dr. Sala-Vila said.
Although their findings are hypothesis-generating at this point, he added, “inclusion of some ALA-rich foods, such as walnuts, in the diet of any individual, whether they have HF or not, might translate into CV benefits, besides the putative effect on HF. There is no evidence of any deleterious effect of one daily serving of walnuts, not even on weight gain.”
Plant power
Dr. Sala-Vila and colleagues analyzed data and samples from 905 patients (mean age, 67; 32% women) with HF of different etiologies. ALA was assessed by gas chromatography in serum phospholipids, which reflect long-term dietary ALA intake and metabolism.
The primary outcome was a composite of all-cause death or first HF hospitalization. The secondary outcome was the composite of CV death or HF hospitalization.
After a median follow-up of 2.4 years, 140 all-cause deaths, 85 CV deaths, and 141 first HF hospitalizations occurred (composite of all-cause death and first HF hospitalization, 238; composite of CV death and HF hospitalization, 184).
Compared with patients at the lowest quartile of ALA in serum phospholipids, those at the three upper quartiles showed a 39% reduction in the risk of the primary endpoint (hazard ratio, 0.61).
Statistically significant reductions also were observed for all-cause death (HR, 0.58), CV death (HR, 0.51), first HF hospitalization (HR, 0.58), and the composite of CV death and HF hospitalization (HR, 0.58).
By contrast, nonstatistically significant associations were seen for fish-derived EPA, DHA, and the sum of EPA + DHA.
Limitations of the study include its observational nature; a relatively young cohort with reduced or mid-range ejection fraction and stage 2 chronic kidney disease; and no dietary data except for those regarding fatty acids.
“Controversial results from landmark recent trials on omega-3 might have translated into confusion/negative impact on the reputation of these fatty acids,” Dr. Sala-Vila noted. “Many factors affect how each participant responds to a certain intervention (precision nutrition), such as genetics, the microbiome, and the environment. In this regard, nutritional status – omega-3 background – is emerging as a key determinant.”
Randomized trials needed
JoAnn E. Manson, MD, MPH, DrPH, chief of the Division of Preventive Medicine at Brigham and Women’s Hospital, Boston, said the findings “are promising in the context of earlier research on omega-3s.”
Those studies include the landmark GISSI-HF trial, a randomized, controlled trial (RCT) that showed a small benefit of n-3 polyunsaturated fatty acids regarding hospital admissions and mortality among patients with chronic HF, and her team’s VITAL-HF study, which showed a significant reduction in recurrent HF hospitalization with marine omega-3 supplementation versus placebo.
“This may not be a causal association, and the authors acknowledge that they don’t have information on other dietary factors,” Dr. Manson said. “It may be that the foods that are leading to this higher blood level of ALA comprise the type of plant-based diet that’s been linked to lower risk of CVD, such as the Mediterranean diet. The findings also could be the result of other factors that aren’t fully controlled for in the analysis, or the participants could be more compliant with their medications.”
Nevertheless, she said, “it’s reasonable to recommend that people with a history of HF or who are at high risk of HF increase their intake of ALA-enriched foods, including canola oil, flaxseed oils, soybeans and soybean oils, and walnuts.”
“I think the evidence is promising enough that an RCT of ALA in people with heart failure also would be reasonable,” she added.
Similarly, Abdallah Al-Mohammad, MD, of Northern General Hospital, Sheffield, England, writes in a related editorial that while a potential role for ALA in improving morbidity and mortality in HF patients cannot be substantiated yet, the findings “open the field to more questions” for which “the judge and jury ... shall be prospective randomized controlled trials.”
No commercial funding or relevant conflicts of interest were declared.
A version of this article first appeared on Medscape.com.
Heart failure (HF) patients with high serum levels of alpha-linolenic acid (ALA) had a better prognosis than those with the lowest levels, in an observational study.
ALA is an omega-3 fatty acid that is found mainly in plants, including flaxseed, chia, walnuts, or canola oil.
“The most striking finding to us is the clear difference between patients at the bottom quartile compared to the other 75%, pointing to a threshold on the putative effect of ALA, reinforcing the notion that ‘one size does not fill all,’ ” Aleix Sala-Vila, PharmD, PhD, of the Hospital del Mar Medical Research Institute, Barcelona, told this news organization.The analysis, which was published online in the Journal of the American College of Cardiology, showed statistically significant reductions in all-cause death, cardiovascular (CV) death, and first HF hospitalization among those in the three upper quartiles of serum ALA levels, compared with those in the lowest quartile.
The team’s earlier finding that higher levels of serum phosphatidylcholine eicosapentaenoic acid (PC EPA) and ALA were associated with a lower risk of adverse events in patients with ST-segment elevation myocardial infarction prompted the current study, Dr. Sala-Vila said.
Although their findings are hypothesis-generating at this point, he added, “inclusion of some ALA-rich foods, such as walnuts, in the diet of any individual, whether they have HF or not, might translate into CV benefits, besides the putative effect on HF. There is no evidence of any deleterious effect of one daily serving of walnuts, not even on weight gain.”
Plant power
Dr. Sala-Vila and colleagues analyzed data and samples from 905 patients (mean age, 67; 32% women) with HF of different etiologies. ALA was assessed by gas chromatography in serum phospholipids, which reflect long-term dietary ALA intake and metabolism.
The primary outcome was a composite of all-cause death or first HF hospitalization. The secondary outcome was the composite of CV death or HF hospitalization.
After a median follow-up of 2.4 years, 140 all-cause deaths, 85 CV deaths, and 141 first HF hospitalizations occurred (composite of all-cause death and first HF hospitalization, 238; composite of CV death and HF hospitalization, 184).
Compared with patients at the lowest quartile of ALA in serum phospholipids, those at the three upper quartiles showed a 39% reduction in the risk of the primary endpoint (hazard ratio, 0.61).
Statistically significant reductions also were observed for all-cause death (HR, 0.58), CV death (HR, 0.51), first HF hospitalization (HR, 0.58), and the composite of CV death and HF hospitalization (HR, 0.58).
By contrast, nonstatistically significant associations were seen for fish-derived EPA, DHA, and the sum of EPA + DHA.
Limitations of the study include its observational nature; a relatively young cohort with reduced or mid-range ejection fraction and stage 2 chronic kidney disease; and no dietary data except for those regarding fatty acids.
“Controversial results from landmark recent trials on omega-3 might have translated into confusion/negative impact on the reputation of these fatty acids,” Dr. Sala-Vila noted. “Many factors affect how each participant responds to a certain intervention (precision nutrition), such as genetics, the microbiome, and the environment. In this regard, nutritional status – omega-3 background – is emerging as a key determinant.”
Randomized trials needed
JoAnn E. Manson, MD, MPH, DrPH, chief of the Division of Preventive Medicine at Brigham and Women’s Hospital, Boston, said the findings “are promising in the context of earlier research on omega-3s.”
Those studies include the landmark GISSI-HF trial, a randomized, controlled trial (RCT) that showed a small benefit of n-3 polyunsaturated fatty acids regarding hospital admissions and mortality among patients with chronic HF, and her team’s VITAL-HF study, which showed a significant reduction in recurrent HF hospitalization with marine omega-3 supplementation versus placebo.
“This may not be a causal association, and the authors acknowledge that they don’t have information on other dietary factors,” Dr. Manson said. “It may be that the foods that are leading to this higher blood level of ALA comprise the type of plant-based diet that’s been linked to lower risk of CVD, such as the Mediterranean diet. The findings also could be the result of other factors that aren’t fully controlled for in the analysis, or the participants could be more compliant with their medications.”
Nevertheless, she said, “it’s reasonable to recommend that people with a history of HF or who are at high risk of HF increase their intake of ALA-enriched foods, including canola oil, flaxseed oils, soybeans and soybean oils, and walnuts.”
“I think the evidence is promising enough that an RCT of ALA in people with heart failure also would be reasonable,” she added.
Similarly, Abdallah Al-Mohammad, MD, of Northern General Hospital, Sheffield, England, writes in a related editorial that while a potential role for ALA in improving morbidity and mortality in HF patients cannot be substantiated yet, the findings “open the field to more questions” for which “the judge and jury ... shall be prospective randomized controlled trials.”
No commercial funding or relevant conflicts of interest were declared.
A version of this article first appeared on Medscape.com.
Heart failure (HF) patients with high serum levels of alpha-linolenic acid (ALA) had a better prognosis than those with the lowest levels, in an observational study.
ALA is an omega-3 fatty acid that is found mainly in plants, including flaxseed, chia, walnuts, or canola oil.
“The most striking finding to us is the clear difference between patients at the bottom quartile compared to the other 75%, pointing to a threshold on the putative effect of ALA, reinforcing the notion that ‘one size does not fill all,’ ” Aleix Sala-Vila, PharmD, PhD, of the Hospital del Mar Medical Research Institute, Barcelona, told this news organization.The analysis, which was published online in the Journal of the American College of Cardiology, showed statistically significant reductions in all-cause death, cardiovascular (CV) death, and first HF hospitalization among those in the three upper quartiles of serum ALA levels, compared with those in the lowest quartile.
The team’s earlier finding that higher levels of serum phosphatidylcholine eicosapentaenoic acid (PC EPA) and ALA were associated with a lower risk of adverse events in patients with ST-segment elevation myocardial infarction prompted the current study, Dr. Sala-Vila said.
Although their findings are hypothesis-generating at this point, he added, “inclusion of some ALA-rich foods, such as walnuts, in the diet of any individual, whether they have HF or not, might translate into CV benefits, besides the putative effect on HF. There is no evidence of any deleterious effect of one daily serving of walnuts, not even on weight gain.”
Plant power
Dr. Sala-Vila and colleagues analyzed data and samples from 905 patients (mean age, 67; 32% women) with HF of different etiologies. ALA was assessed by gas chromatography in serum phospholipids, which reflect long-term dietary ALA intake and metabolism.
The primary outcome was a composite of all-cause death or first HF hospitalization. The secondary outcome was the composite of CV death or HF hospitalization.
After a median follow-up of 2.4 years, 140 all-cause deaths, 85 CV deaths, and 141 first HF hospitalizations occurred (composite of all-cause death and first HF hospitalization, 238; composite of CV death and HF hospitalization, 184).
Compared with patients at the lowest quartile of ALA in serum phospholipids, those at the three upper quartiles showed a 39% reduction in the risk of the primary endpoint (hazard ratio, 0.61).
Statistically significant reductions also were observed for all-cause death (HR, 0.58), CV death (HR, 0.51), first HF hospitalization (HR, 0.58), and the composite of CV death and HF hospitalization (HR, 0.58).
By contrast, nonstatistically significant associations were seen for fish-derived EPA, DHA, and the sum of EPA + DHA.
Limitations of the study include its observational nature; a relatively young cohort with reduced or mid-range ejection fraction and stage 2 chronic kidney disease; and no dietary data except for those regarding fatty acids.
“Controversial results from landmark recent trials on omega-3 might have translated into confusion/negative impact on the reputation of these fatty acids,” Dr. Sala-Vila noted. “Many factors affect how each participant responds to a certain intervention (precision nutrition), such as genetics, the microbiome, and the environment. In this regard, nutritional status – omega-3 background – is emerging as a key determinant.”
Randomized trials needed
JoAnn E. Manson, MD, MPH, DrPH, chief of the Division of Preventive Medicine at Brigham and Women’s Hospital, Boston, said the findings “are promising in the context of earlier research on omega-3s.”
Those studies include the landmark GISSI-HF trial, a randomized, controlled trial (RCT) that showed a small benefit of n-3 polyunsaturated fatty acids regarding hospital admissions and mortality among patients with chronic HF, and her team’s VITAL-HF study, which showed a significant reduction in recurrent HF hospitalization with marine omega-3 supplementation versus placebo.
“This may not be a causal association, and the authors acknowledge that they don’t have information on other dietary factors,” Dr. Manson said. “It may be that the foods that are leading to this higher blood level of ALA comprise the type of plant-based diet that’s been linked to lower risk of CVD, such as the Mediterranean diet. The findings also could be the result of other factors that aren’t fully controlled for in the analysis, or the participants could be more compliant with their medications.”
Nevertheless, she said, “it’s reasonable to recommend that people with a history of HF or who are at high risk of HF increase their intake of ALA-enriched foods, including canola oil, flaxseed oils, soybeans and soybean oils, and walnuts.”
“I think the evidence is promising enough that an RCT of ALA in people with heart failure also would be reasonable,” she added.
Similarly, Abdallah Al-Mohammad, MD, of Northern General Hospital, Sheffield, England, writes in a related editorial that while a potential role for ALA in improving morbidity and mortality in HF patients cannot be substantiated yet, the findings “open the field to more questions” for which “the judge and jury ... shall be prospective randomized controlled trials.”
No commercial funding or relevant conflicts of interest were declared.
A version of this article first appeared on Medscape.com.
Plant-based diet cut hot flashes 78%: WAVS study
Women eating a reduced-fat vegan diet combined with a daily serving of soybeans experienced a 78% reduction in frequency of menopausal hot flashes over 12 weeks, in a small, nonblinded, randomized-controlled trial.
“We do not fully understand yet why this combination works, but it seems that these three elements are key: avoiding animal products, reducing fat, and adding a serving of soybeans,” lead researcher Neal Barnard, MD, explained in a press release. “These new results suggest that a diet change should be considered as a first-line treatment for troublesome vasomotor symptoms, including night sweats and hot flashes,” added Dr. Barnard, who is president of the Physicians Committee for Responsible Medicine, and adjunct professor at George Washington University, Washington.
But, while “the findings from this very small study complement everything we know about the benefits of an excellent diet and the health benefits of soy,” they should be interpreted with some caution, commented Susan Reed, MD, president of the North American Menopause Society, and associate program director of the women’s reproductive research program at the University of Washington, Seattle.
For the trial, called WAVS (Women’s Study for the Alleviation of Vasomotor Symptoms), the researchers randomized 84 postmenopausal women with at least two moderate to severe hot flashes daily to either the intervention or usual diet, with a total of 71 subjects completing the 12-week study, published in Menopause. Criteria for exclusion included any cause of vasomotor symptoms other than natural menopause, current use of a low-fat, vegan diet that includes daily soy products, soy allergy, and body mass index < 18.5 kg/m2.
Participants in the intervention group were asked to avoid animal-derived foods, minimize their use of oils and fatty foods such as nuts and avocados, and include half a cup (86 g) of cooked soybeans daily in their diets. They were also offered 1-hour virtual group meetings each week, in which a registered dietitian or research staff provided information on food preparation and managing common dietary challenges.
Control group participants were asked to continue their usual diets and attend four 1-hour group sessions.
At baseline and then after the 12-week study period, dietary intake was self-recorded for 2 weekdays and 1 weekend day, hot flash frequency and severity was recorded for 1 week using a mobile app, and the effect of menopausal symptoms on quality of life was measured using the vasomotor, psychosocial, physical, and sexual domains of the Menopause-Specific Quality of Life (MENQOL) questionnaire.
Equol production was also assessed in a subset of 15 intervention and 12 control participants who had urinary isoflavone concentrations measured after eating half a cup (86 g) of soybeans twice daily for 3 days. This was based on the theory that diets such as the intervention in this study “seem to foster the growth of gut bacteria capable of converting daidzein to equol,” noted the authors. The ability to produce equol is detected more frequently in individuals following vegetarian diets than in omnivores and … has been proposed as a factor in soy’s apparent health benefits.”
The study found that total hot flash frequency decreased by 78% in the intervention group (P < .001) and 39% (P < .001) in the control group (between-group P = .003), and moderate to severe hot flashes decreased by 88% versus 34%, respectively (from 5.0 to 0.6 per day, P < .001 vs. from 4.4 to 2.9 per day, P < .001; between-group P < .001). Among participants with at least seven moderate to severe hot flashes per day at baseline, moderate to severe hot flashes decreased by 93% (from 10.6 to 0.7 per day) in the intervention group (P < .001) and 36% (from 9.0 to 5.8 per day) in the control group (P = .01, between-group P < .001). The changes in hot flashes were paralleled by changes in the MENQOL findings, with significant between-group differences in the vasomotor (P = 0.004), physical (P = 0.01), and sexual (P = 0.03) domains.
Changes in frequency of severe hot flashes correlated directly with changes in fat intake, and inversely with changes in carbohydrate and fiber intake, such that “the greater the reduction in fat intake and the greater the increases in carbohydrate and fiber consumption, the greater the reduction in severe hot flashes,” noted the researchers. Mean body weight also decreased by 3.6 kg in the intervention group and 0.2 kg in the control group (P < .001). “Equol-production status had no apparent effect on hot flashes,” they added.
The study is the second phase of WAVS, which comprises two parts, the first of which showed similar results, but was conducted in the fall, raising questions about whether cooler temperatures were partly responsible for the results. Phase 2 of WAVS enrolled participants in the spring “ruling out the effect of outside temperature,” noted the authors.
“Eating a healthy diet at midlife is so important for long-term health and a sense of well-being for peri- and postmenopausal women,” said Dr Reed, but she urged caution in interpreting the findings. “This was an unblinded study,” she told this news organization. “Women were recruited to this study anticipating that they would be in a study on a soy diet. Individuals who sign up for a study are hoping for benefit from the intervention. The controls who don’t get the soy diet are often disappointed, so there is no benefit from a nonblinded control arm for their hot flashes. And that is exactly what we saw here. Blinded studies can hide what you are getting, so everyone in the study (intervention and controls) has the same anticipated benefit. But you cannot blind a soy diet.”
Dr. Reed also noted that, while the biologic mechanism of benefit should be equol production, this was not shown – given that both equol producers and nonproducers in the soy intervention reported marked symptom reduction.
“Only prior studies with estrogen interventions have observed reductions of hot flashes of the amount reported here,” she concluded. “Hopefully future large studies will clarify the role of soy diet for decreasing hot flashes.”
Dr. Barnard writes books and articles and gives lectures related to nutrition and health and has received royalties and honoraria from these sources. Dr. Reed has no relevant disclosures.
Women eating a reduced-fat vegan diet combined with a daily serving of soybeans experienced a 78% reduction in frequency of menopausal hot flashes over 12 weeks, in a small, nonblinded, randomized-controlled trial.
“We do not fully understand yet why this combination works, but it seems that these three elements are key: avoiding animal products, reducing fat, and adding a serving of soybeans,” lead researcher Neal Barnard, MD, explained in a press release. “These new results suggest that a diet change should be considered as a first-line treatment for troublesome vasomotor symptoms, including night sweats and hot flashes,” added Dr. Barnard, who is president of the Physicians Committee for Responsible Medicine, and adjunct professor at George Washington University, Washington.
But, while “the findings from this very small study complement everything we know about the benefits of an excellent diet and the health benefits of soy,” they should be interpreted with some caution, commented Susan Reed, MD, president of the North American Menopause Society, and associate program director of the women’s reproductive research program at the University of Washington, Seattle.
For the trial, called WAVS (Women’s Study for the Alleviation of Vasomotor Symptoms), the researchers randomized 84 postmenopausal women with at least two moderate to severe hot flashes daily to either the intervention or usual diet, with a total of 71 subjects completing the 12-week study, published in Menopause. Criteria for exclusion included any cause of vasomotor symptoms other than natural menopause, current use of a low-fat, vegan diet that includes daily soy products, soy allergy, and body mass index < 18.5 kg/m2.
Participants in the intervention group were asked to avoid animal-derived foods, minimize their use of oils and fatty foods such as nuts and avocados, and include half a cup (86 g) of cooked soybeans daily in their diets. They were also offered 1-hour virtual group meetings each week, in which a registered dietitian or research staff provided information on food preparation and managing common dietary challenges.
Control group participants were asked to continue their usual diets and attend four 1-hour group sessions.
At baseline and then after the 12-week study period, dietary intake was self-recorded for 2 weekdays and 1 weekend day, hot flash frequency and severity was recorded for 1 week using a mobile app, and the effect of menopausal symptoms on quality of life was measured using the vasomotor, psychosocial, physical, and sexual domains of the Menopause-Specific Quality of Life (MENQOL) questionnaire.
Equol production was also assessed in a subset of 15 intervention and 12 control participants who had urinary isoflavone concentrations measured after eating half a cup (86 g) of soybeans twice daily for 3 days. This was based on the theory that diets such as the intervention in this study “seem to foster the growth of gut bacteria capable of converting daidzein to equol,” noted the authors. The ability to produce equol is detected more frequently in individuals following vegetarian diets than in omnivores and … has been proposed as a factor in soy’s apparent health benefits.”
The study found that total hot flash frequency decreased by 78% in the intervention group (P < .001) and 39% (P < .001) in the control group (between-group P = .003), and moderate to severe hot flashes decreased by 88% versus 34%, respectively (from 5.0 to 0.6 per day, P < .001 vs. from 4.4 to 2.9 per day, P < .001; between-group P < .001). Among participants with at least seven moderate to severe hot flashes per day at baseline, moderate to severe hot flashes decreased by 93% (from 10.6 to 0.7 per day) in the intervention group (P < .001) and 36% (from 9.0 to 5.8 per day) in the control group (P = .01, between-group P < .001). The changes in hot flashes were paralleled by changes in the MENQOL findings, with significant between-group differences in the vasomotor (P = 0.004), physical (P = 0.01), and sexual (P = 0.03) domains.
Changes in frequency of severe hot flashes correlated directly with changes in fat intake, and inversely with changes in carbohydrate and fiber intake, such that “the greater the reduction in fat intake and the greater the increases in carbohydrate and fiber consumption, the greater the reduction in severe hot flashes,” noted the researchers. Mean body weight also decreased by 3.6 kg in the intervention group and 0.2 kg in the control group (P < .001). “Equol-production status had no apparent effect on hot flashes,” they added.
The study is the second phase of WAVS, which comprises two parts, the first of which showed similar results, but was conducted in the fall, raising questions about whether cooler temperatures were partly responsible for the results. Phase 2 of WAVS enrolled participants in the spring “ruling out the effect of outside temperature,” noted the authors.
“Eating a healthy diet at midlife is so important for long-term health and a sense of well-being for peri- and postmenopausal women,” said Dr Reed, but she urged caution in interpreting the findings. “This was an unblinded study,” she told this news organization. “Women were recruited to this study anticipating that they would be in a study on a soy diet. Individuals who sign up for a study are hoping for benefit from the intervention. The controls who don’t get the soy diet are often disappointed, so there is no benefit from a nonblinded control arm for their hot flashes. And that is exactly what we saw here. Blinded studies can hide what you are getting, so everyone in the study (intervention and controls) has the same anticipated benefit. But you cannot blind a soy diet.”
Dr. Reed also noted that, while the biologic mechanism of benefit should be equol production, this was not shown – given that both equol producers and nonproducers in the soy intervention reported marked symptom reduction.
“Only prior studies with estrogen interventions have observed reductions of hot flashes of the amount reported here,” she concluded. “Hopefully future large studies will clarify the role of soy diet for decreasing hot flashes.”
Dr. Barnard writes books and articles and gives lectures related to nutrition and health and has received royalties and honoraria from these sources. Dr. Reed has no relevant disclosures.
Women eating a reduced-fat vegan diet combined with a daily serving of soybeans experienced a 78% reduction in frequency of menopausal hot flashes over 12 weeks, in a small, nonblinded, randomized-controlled trial.
“We do not fully understand yet why this combination works, but it seems that these three elements are key: avoiding animal products, reducing fat, and adding a serving of soybeans,” lead researcher Neal Barnard, MD, explained in a press release. “These new results suggest that a diet change should be considered as a first-line treatment for troublesome vasomotor symptoms, including night sweats and hot flashes,” added Dr. Barnard, who is president of the Physicians Committee for Responsible Medicine, and adjunct professor at George Washington University, Washington.
But, while “the findings from this very small study complement everything we know about the benefits of an excellent diet and the health benefits of soy,” they should be interpreted with some caution, commented Susan Reed, MD, president of the North American Menopause Society, and associate program director of the women’s reproductive research program at the University of Washington, Seattle.
For the trial, called WAVS (Women’s Study for the Alleviation of Vasomotor Symptoms), the researchers randomized 84 postmenopausal women with at least two moderate to severe hot flashes daily to either the intervention or usual diet, with a total of 71 subjects completing the 12-week study, published in Menopause. Criteria for exclusion included any cause of vasomotor symptoms other than natural menopause, current use of a low-fat, vegan diet that includes daily soy products, soy allergy, and body mass index < 18.5 kg/m2.
Participants in the intervention group were asked to avoid animal-derived foods, minimize their use of oils and fatty foods such as nuts and avocados, and include half a cup (86 g) of cooked soybeans daily in their diets. They were also offered 1-hour virtual group meetings each week, in which a registered dietitian or research staff provided information on food preparation and managing common dietary challenges.
Control group participants were asked to continue their usual diets and attend four 1-hour group sessions.
At baseline and then after the 12-week study period, dietary intake was self-recorded for 2 weekdays and 1 weekend day, hot flash frequency and severity was recorded for 1 week using a mobile app, and the effect of menopausal symptoms on quality of life was measured using the vasomotor, psychosocial, physical, and sexual domains of the Menopause-Specific Quality of Life (MENQOL) questionnaire.
Equol production was also assessed in a subset of 15 intervention and 12 control participants who had urinary isoflavone concentrations measured after eating half a cup (86 g) of soybeans twice daily for 3 days. This was based on the theory that diets such as the intervention in this study “seem to foster the growth of gut bacteria capable of converting daidzein to equol,” noted the authors. The ability to produce equol is detected more frequently in individuals following vegetarian diets than in omnivores and … has been proposed as a factor in soy’s apparent health benefits.”
The study found that total hot flash frequency decreased by 78% in the intervention group (P < .001) and 39% (P < .001) in the control group (between-group P = .003), and moderate to severe hot flashes decreased by 88% versus 34%, respectively (from 5.0 to 0.6 per day, P < .001 vs. from 4.4 to 2.9 per day, P < .001; between-group P < .001). Among participants with at least seven moderate to severe hot flashes per day at baseline, moderate to severe hot flashes decreased by 93% (from 10.6 to 0.7 per day) in the intervention group (P < .001) and 36% (from 9.0 to 5.8 per day) in the control group (P = .01, between-group P < .001). The changes in hot flashes were paralleled by changes in the MENQOL findings, with significant between-group differences in the vasomotor (P = 0.004), physical (P = 0.01), and sexual (P = 0.03) domains.
Changes in frequency of severe hot flashes correlated directly with changes in fat intake, and inversely with changes in carbohydrate and fiber intake, such that “the greater the reduction in fat intake and the greater the increases in carbohydrate and fiber consumption, the greater the reduction in severe hot flashes,” noted the researchers. Mean body weight also decreased by 3.6 kg in the intervention group and 0.2 kg in the control group (P < .001). “Equol-production status had no apparent effect on hot flashes,” they added.
The study is the second phase of WAVS, which comprises two parts, the first of which showed similar results, but was conducted in the fall, raising questions about whether cooler temperatures were partly responsible for the results. Phase 2 of WAVS enrolled participants in the spring “ruling out the effect of outside temperature,” noted the authors.
“Eating a healthy diet at midlife is so important for long-term health and a sense of well-being for peri- and postmenopausal women,” said Dr Reed, but she urged caution in interpreting the findings. “This was an unblinded study,” she told this news organization. “Women were recruited to this study anticipating that they would be in a study on a soy diet. Individuals who sign up for a study are hoping for benefit from the intervention. The controls who don’t get the soy diet are often disappointed, so there is no benefit from a nonblinded control arm for their hot flashes. And that is exactly what we saw here. Blinded studies can hide what you are getting, so everyone in the study (intervention and controls) has the same anticipated benefit. But you cannot blind a soy diet.”
Dr. Reed also noted that, while the biologic mechanism of benefit should be equol production, this was not shown – given that both equol producers and nonproducers in the soy intervention reported marked symptom reduction.
“Only prior studies with estrogen interventions have observed reductions of hot flashes of the amount reported here,” she concluded. “Hopefully future large studies will clarify the role of soy diet for decreasing hot flashes.”
Dr. Barnard writes books and articles and gives lectures related to nutrition and health and has received royalties and honoraria from these sources. Dr. Reed has no relevant disclosures.
Vitamin D deficiency linked to death, new study finds
Vitamin D deficiency increases mortality risk and raising levels even slightly could decrease the risk, researchers examining data from the UK Biobank have found.
They used a Mendelian randomization approach, which uses genetic variants as “proxy indicators” for external factors that affect vitamin D levels, such as sun exposure or dietary intake. It allows for analysis of the relationship between deficiency and outcomes including mortality, which can’t be done in randomized clinical trials for ethical reasons.
Using this method, nutritionist Joshua P. Sutherland, PhD, of the Australian Centre for Precision Health, Adelaide, and colleagues found an association between genetically predicted vitamin D levels [25-(OH)D] and mortality from several major causes, with evidence of causality among people with measured concentrations below, but not above, 50 nmol/L. The findings were published online in Annals of Internal Medicine.
“Unlike other types of observational studies, we have overcome some of the methodological obstacles. What is special about this new study is we were able to look at people with very low vitamin D concentrations and what would happen if their concentrations were a little bit higher. Most randomized controlled trials don’t show much of an effect. That’s because most people have sufficient concentrations. Ethically you can’t do a trial of people with very low levels without treating them,” senior author Elina Hypp
The data support the 50 nmol/L cut-off endorsed by the United States National Academy of Medicine and align with previous data suggesting the benefit of vitamin D supplementation is largely seen in people with deficiency.
“Everybody with vitamin D levels less than 50 nmol/L is recommended to increase their levels. Our results suggest there’s no need to go very high. The positive message is that if we are able to raise levels to just the current U.S. recommendations, that’s fine. There’s no need to use large supplement doses,” Dr. Hyppönen explained.
Thus, she advised, “Supplementation will clearly help, especially during wintertime or if a person isn’t getting enough vitamin D from the sun or in places where food isn’t fortified with vitamin D.”
But the data don’t support the approach of using large intermittent doses, she added.
“Sometimes doctors want to fix the deficiency quickly with a large ‘bolus’ dose, then continue with a maintenance dose. Increasing evidence suggests that’s not beneficial and might disturb the body’s metabolism so that it can’t get the amount it needs. It’s safe overall but might not work the way we want it to work.”
Rather, Dr. Hyppönen said, “My sense is that daily modest vitamin D dose supplementation when it’s needed is the best way forward.”
Genetic approach reveals causal relationship
The investigators analyzed data from 307,601 individuals in the UK Biobank, a prospective cohort of people recruited from England, Scotland, and Wales during March 2006 and July 2010. Most were of White European ancestry and were aged 37-73 years at baseline.
Genetically predicted vitamin D levels were estimated using 35 confirmed 25-(OH)D variants. Participants were followed for outcomes up to June 2020.
The average baseline measured 25-(OH)D concentration was 45.2 nmol/L, and 11.7% (n = 36,009) of participants had levels between 10.0 and 24.9 nmol/L. Higher levels were seen in people living in southern areas and nonsmokers as well as those with a higher level of physical activity, less socioeconomic deprivation, and lower body mass index.
During follow-up, 6.1% of participants died (n = 18,700). After adjustment for variables, odds ratios for all causes of mortality were highest among people with 25-(OH)D levels below 25 nmol/L and appeared to plateau between 50 and 75 nmol/L, with no further reduction in mortality at values of 75-125 nmol/L.
Mortality 36% higher in those deficient in vitamin D
The risk for mortality was a significant 36% higher for participants with 25-(OH)D 25 nmol/L compared with 50 nmol/L.
With the Mendelian randomization, there was an L-shaped association between genetically predicted 25-(OH)D level and all-cause mortality (P for nonlinearity < .001) and for mortality because of cancer and cardiovascular disease (P for nonlinearity ≤ .033).
Again, the strongest association with those outcomes and genetically predicted 25-(OH)D was found at levels below 25 nmol/L and a plateau was seen by 50 nmol/L.
Compared with a measured 25-(OH)D concentration of 50 nmol/L, investigators estimated that the genetically predicted odds of all-cause mortality would increase sixfold (odds ratio, 6.00) for participants at 10 nmol/L and by 25% (OR, 1.25) for those at 25 nmol/L.
And, compared with a measured 25-(OH)D concentration of 50 nmol/L, those with 10 nmol/L had genetically predicted odds ratios of 5.98 for cardiovascular mortality, 3.37 for cancer mortality, and 12.44 for respiratory mortality.
Comparing measured 25-(OH)D concentrations of 25 nmol/L versus 50 nmol/L, odds ratios for those outcomes were 1.25, 1.16, and 1.96 (95% confidence interval, 1.88-4.67), respectively. All were statistically significant.
Consistent results supportive of a causal effect of genetically predicted 25-(OH)D on all-cause mortality in those with low measured vitamin D concentrations were also found in a sensitivity analysis of 20,837 people of non-White ethnic origin.
The study was funded by the Australian National Health and Medical Research Council. Dr. Sutherland’s studentship is funded by an Australian Research Training Program Scholarship.
A version of this article first appeared on Medscape.com.
Vitamin D deficiency increases mortality risk and raising levels even slightly could decrease the risk, researchers examining data from the UK Biobank have found.
They used a Mendelian randomization approach, which uses genetic variants as “proxy indicators” for external factors that affect vitamin D levels, such as sun exposure or dietary intake. It allows for analysis of the relationship between deficiency and outcomes including mortality, which can’t be done in randomized clinical trials for ethical reasons.
Using this method, nutritionist Joshua P. Sutherland, PhD, of the Australian Centre for Precision Health, Adelaide, and colleagues found an association between genetically predicted vitamin D levels [25-(OH)D] and mortality from several major causes, with evidence of causality among people with measured concentrations below, but not above, 50 nmol/L. The findings were published online in Annals of Internal Medicine.
“Unlike other types of observational studies, we have overcome some of the methodological obstacles. What is special about this new study is we were able to look at people with very low vitamin D concentrations and what would happen if their concentrations were a little bit higher. Most randomized controlled trials don’t show much of an effect. That’s because most people have sufficient concentrations. Ethically you can’t do a trial of people with very low levels without treating them,” senior author Elina Hypp
The data support the 50 nmol/L cut-off endorsed by the United States National Academy of Medicine and align with previous data suggesting the benefit of vitamin D supplementation is largely seen in people with deficiency.
“Everybody with vitamin D levels less than 50 nmol/L is recommended to increase their levels. Our results suggest there’s no need to go very high. The positive message is that if we are able to raise levels to just the current U.S. recommendations, that’s fine. There’s no need to use large supplement doses,” Dr. Hyppönen explained.
Thus, she advised, “Supplementation will clearly help, especially during wintertime or if a person isn’t getting enough vitamin D from the sun or in places where food isn’t fortified with vitamin D.”
But the data don’t support the approach of using large intermittent doses, she added.
“Sometimes doctors want to fix the deficiency quickly with a large ‘bolus’ dose, then continue with a maintenance dose. Increasing evidence suggests that’s not beneficial and might disturb the body’s metabolism so that it can’t get the amount it needs. It’s safe overall but might not work the way we want it to work.”
Rather, Dr. Hyppönen said, “My sense is that daily modest vitamin D dose supplementation when it’s needed is the best way forward.”
Genetic approach reveals causal relationship
The investigators analyzed data from 307,601 individuals in the UK Biobank, a prospective cohort of people recruited from England, Scotland, and Wales during March 2006 and July 2010. Most were of White European ancestry and were aged 37-73 years at baseline.
Genetically predicted vitamin D levels were estimated using 35 confirmed 25-(OH)D variants. Participants were followed for outcomes up to June 2020.
The average baseline measured 25-(OH)D concentration was 45.2 nmol/L, and 11.7% (n = 36,009) of participants had levels between 10.0 and 24.9 nmol/L. Higher levels were seen in people living in southern areas and nonsmokers as well as those with a higher level of physical activity, less socioeconomic deprivation, and lower body mass index.
During follow-up, 6.1% of participants died (n = 18,700). After adjustment for variables, odds ratios for all causes of mortality were highest among people with 25-(OH)D levels below 25 nmol/L and appeared to plateau between 50 and 75 nmol/L, with no further reduction in mortality at values of 75-125 nmol/L.
Mortality 36% higher in those deficient in vitamin D
The risk for mortality was a significant 36% higher for participants with 25-(OH)D 25 nmol/L compared with 50 nmol/L.
With the Mendelian randomization, there was an L-shaped association between genetically predicted 25-(OH)D level and all-cause mortality (P for nonlinearity < .001) and for mortality because of cancer and cardiovascular disease (P for nonlinearity ≤ .033).
Again, the strongest association with those outcomes and genetically predicted 25-(OH)D was found at levels below 25 nmol/L and a plateau was seen by 50 nmol/L.
Compared with a measured 25-(OH)D concentration of 50 nmol/L, investigators estimated that the genetically predicted odds of all-cause mortality would increase sixfold (odds ratio, 6.00) for participants at 10 nmol/L and by 25% (OR, 1.25) for those at 25 nmol/L.
And, compared with a measured 25-(OH)D concentration of 50 nmol/L, those with 10 nmol/L had genetically predicted odds ratios of 5.98 for cardiovascular mortality, 3.37 for cancer mortality, and 12.44 for respiratory mortality.
Comparing measured 25-(OH)D concentrations of 25 nmol/L versus 50 nmol/L, odds ratios for those outcomes were 1.25, 1.16, and 1.96 (95% confidence interval, 1.88-4.67), respectively. All were statistically significant.
Consistent results supportive of a causal effect of genetically predicted 25-(OH)D on all-cause mortality in those with low measured vitamin D concentrations were also found in a sensitivity analysis of 20,837 people of non-White ethnic origin.
The study was funded by the Australian National Health and Medical Research Council. Dr. Sutherland’s studentship is funded by an Australian Research Training Program Scholarship.
A version of this article first appeared on Medscape.com.
Vitamin D deficiency increases mortality risk and raising levels even slightly could decrease the risk, researchers examining data from the UK Biobank have found.
They used a Mendelian randomization approach, which uses genetic variants as “proxy indicators” for external factors that affect vitamin D levels, such as sun exposure or dietary intake. It allows for analysis of the relationship between deficiency and outcomes including mortality, which can’t be done in randomized clinical trials for ethical reasons.
Using this method, nutritionist Joshua P. Sutherland, PhD, of the Australian Centre for Precision Health, Adelaide, and colleagues found an association between genetically predicted vitamin D levels [25-(OH)D] and mortality from several major causes, with evidence of causality among people with measured concentrations below, but not above, 50 nmol/L. The findings were published online in Annals of Internal Medicine.
“Unlike other types of observational studies, we have overcome some of the methodological obstacles. What is special about this new study is we were able to look at people with very low vitamin D concentrations and what would happen if their concentrations were a little bit higher. Most randomized controlled trials don’t show much of an effect. That’s because most people have sufficient concentrations. Ethically you can’t do a trial of people with very low levels without treating them,” senior author Elina Hypp
The data support the 50 nmol/L cut-off endorsed by the United States National Academy of Medicine and align with previous data suggesting the benefit of vitamin D supplementation is largely seen in people with deficiency.
“Everybody with vitamin D levels less than 50 nmol/L is recommended to increase their levels. Our results suggest there’s no need to go very high. The positive message is that if we are able to raise levels to just the current U.S. recommendations, that’s fine. There’s no need to use large supplement doses,” Dr. Hyppönen explained.
Thus, she advised, “Supplementation will clearly help, especially during wintertime or if a person isn’t getting enough vitamin D from the sun or in places where food isn’t fortified with vitamin D.”
But the data don’t support the approach of using large intermittent doses, she added.
“Sometimes doctors want to fix the deficiency quickly with a large ‘bolus’ dose, then continue with a maintenance dose. Increasing evidence suggests that’s not beneficial and might disturb the body’s metabolism so that it can’t get the amount it needs. It’s safe overall but might not work the way we want it to work.”
Rather, Dr. Hyppönen said, “My sense is that daily modest vitamin D dose supplementation when it’s needed is the best way forward.”
Genetic approach reveals causal relationship
The investigators analyzed data from 307,601 individuals in the UK Biobank, a prospective cohort of people recruited from England, Scotland, and Wales during March 2006 and July 2010. Most were of White European ancestry and were aged 37-73 years at baseline.
Genetically predicted vitamin D levels were estimated using 35 confirmed 25-(OH)D variants. Participants were followed for outcomes up to June 2020.
The average baseline measured 25-(OH)D concentration was 45.2 nmol/L, and 11.7% (n = 36,009) of participants had levels between 10.0 and 24.9 nmol/L. Higher levels were seen in people living in southern areas and nonsmokers as well as those with a higher level of physical activity, less socioeconomic deprivation, and lower body mass index.
During follow-up, 6.1% of participants died (n = 18,700). After adjustment for variables, odds ratios for all causes of mortality were highest among people with 25-(OH)D levels below 25 nmol/L and appeared to plateau between 50 and 75 nmol/L, with no further reduction in mortality at values of 75-125 nmol/L.
Mortality 36% higher in those deficient in vitamin D
The risk for mortality was a significant 36% higher for participants with 25-(OH)D 25 nmol/L compared with 50 nmol/L.
With the Mendelian randomization, there was an L-shaped association between genetically predicted 25-(OH)D level and all-cause mortality (P for nonlinearity < .001) and for mortality because of cancer and cardiovascular disease (P for nonlinearity ≤ .033).
Again, the strongest association with those outcomes and genetically predicted 25-(OH)D was found at levels below 25 nmol/L and a plateau was seen by 50 nmol/L.
Compared with a measured 25-(OH)D concentration of 50 nmol/L, investigators estimated that the genetically predicted odds of all-cause mortality would increase sixfold (odds ratio, 6.00) for participants at 10 nmol/L and by 25% (OR, 1.25) for those at 25 nmol/L.
And, compared with a measured 25-(OH)D concentration of 50 nmol/L, those with 10 nmol/L had genetically predicted odds ratios of 5.98 for cardiovascular mortality, 3.37 for cancer mortality, and 12.44 for respiratory mortality.
Comparing measured 25-(OH)D concentrations of 25 nmol/L versus 50 nmol/L, odds ratios for those outcomes were 1.25, 1.16, and 1.96 (95% confidence interval, 1.88-4.67), respectively. All were statistically significant.
Consistent results supportive of a causal effect of genetically predicted 25-(OH)D on all-cause mortality in those with low measured vitamin D concentrations were also found in a sensitivity analysis of 20,837 people of non-White ethnic origin.
The study was funded by the Australian National Health and Medical Research Council. Dr. Sutherland’s studentship is funded by an Australian Research Training Program Scholarship.
A version of this article first appeared on Medscape.com.
FROM ANNALS OF INTERNAL MEDICINE
Early estrogen loss increases cardiovascular risk in women
The relationship between estrogen levels and heart health makes it particularly important for clinicians to be aware of those patients who might be at risk for cardiovascular disease despite not having other traditional risk factors, according to a presentation Oct. 12 at the North American Menopause Society annual meeting in Atlanta.
”Endogenous estrogens are protective for cardiovascular disease in premenopausal women,” Chrisandra L. Shufelt, MD, chair of the division of general internal medicine and associate director of the Women’s Health Research Center at Mayo Clinic in Jacksonville, Fla., told attendees. Yet, “a substantial population of young women are dying prematurely from cardiovascular disease,” with rates of cardiovascular death increasing in women aged 35-44 even as rates have decreased in postmenopausal women and in men. One potential reason may be premature estrogen loss.
Dr. Shufelt reminded attendees of four major causes of premature estrogen loss: Natural premature menopause, surgical menopause, chemotherapy-induced menopause, and premature ovarian insufficiency. But she would go on to discuss a less widely recognized condition, functional hypothalamic amenorrhea, that also may be contributing to increased cardiovascular risk.
First, Dr. Shufelt reviewed the evidence supporting the relationship between estrogen and cardiovascular health, starting with the Framingham study’s findings that cardiovascular disease is approximately two to four times more common in postmenopausal women than in premenopausal women, depending on the age range.
“Menopause at an early age, particularly under the age of 40, matters,” Dr. Shufelt said. “So we should be discussing this with our patients.”
Surgical menopause makes a difference to cardiovascular health as well, she said. In women under age 35, for example, the risk of a nonfatal heart attack in those with a bilateral oophorectomy was 7.7 times greater than in women who retained both ovaries and their uterus, and 1.5 times greater in women who had a hysterectomy without bilateral oophorectomy.
In a 2019 study, surgical premature menopause was associated with an 87% increased risk of heart disease even after researchers accounted for age, cardiovascular risk factors, and some forms of hormone therapy. The increased risk from natural premature menopause, on the other hand, was lower – a 36% increased risk of heart disease – compared with those producing endogenous hormones. Although randomized controlled trials are unavailable and unlikely to be done, the Nurses’ Health Study and the Danish Nurses Cohort Study, both observational studies, found that heart disease risk was diminished in those taking hormone therapy after surgical premature menopause.
Recommendations for premature or early menopause, from a wide range of different medical societies including NAMS, are that women without contraindications be given estrogen-based hormone therapy until the average age of natural menopause. Though not included in the same guidance, research has also shown that estrogen after oophorectomy does not increase the risk of breast cancer in women with a BRCA1 mutation, Dr. Shufelt said. Hormone therapy for premature or early menopause should adequately replace the levels women have lost and that means younger menopausal women often need higher doses than what older women receive, such as 2 mg/day of oral estradiol rather than the standard doses of 0.5 or 1 mg/day.
Functional hypothalamic amenorrhea and cardiovascular risk
Dr. Shufelt then discussed functional hypothalamic amenorrhea (hypogonadotropic hypogonadism), a common type of secondary amenorrhea that affects at least 1.4 million U.S. women. Diagnosis includes lack of a period for at least 3 months in someone who previously menstruated plus lab values below 50 pg/mL for estradiol, below 10 mIU/L for follicle stimulating hormone, and below 10 mIU/L for luteinizing hormone. Causes of this reversible form of infertility can include stress, overexercising, undereating, or some combination of these, plus an underlying genetic predisposition.
“After ruling out polycystic ovary syndrome, prolactinoma, and thyroid dysfunction, clinicians need to consider the diagnosis of hypothalamic amenorrhea,” Dr. Shufelt said. This condition goes beyond low estrogen levels: Women have elevated cortisol, low thyroid levels, low leptin levels, and increased ghrelin.
”This is not going away,” Dr. Shufelt said, sharing data on stress levels among U.S. adults, particularly Gen Z and millennial adults, noting that the ongoing “national mental health crisis” may be contributing to functional hypothalamic amenorrhea.
A 2020 substudy from the Nurses’ Health Study II found an increased risk of premature death in those who didn’t have a period or always had irregular periods starting as early as 14-17 years old. The increased risk of premature death rose with age in those with irregular or absent cycles – a 37% higher risk in 18- to 22-year-olds and a 39% increased risk in 29- to 46-year-olds.
But clinicians aren’t adequately identifying the “phenotype of the hypothalamic women,” Dr. Shufelt said, despite research showing overlap between hypothalamic amenorrhea and a higher risk of cardiovascular disease. Hypothalamic amenorrhea is so understudied that the last original research on the topic was in 2008, Dr. Shufelt said in an interview. ”No research except mine has been done to evaluate heart health in these young women,” she said.
Dr. Shufelt described a study she led involving 30 women with functional hypothalamic amenorrhea, 29 women with normal menstrual cycles, and 30 women who were recently menopausal and not on hormone therapy. The women with hypothalamic amenorrhea had average stress levels but their depression scores were higher than those of the other two groups.
The results showed that women with hypothalamic amenorrhea had lower estradiol and leptin levels and higher testosterone levels compared with the control group, and they had higher cortisol levels than those of both groups. Despite having similar body mass indexes as the control and menopausal groups, women with hypothalamic amenorrhea had lower blood pressure than that of the other two groups, yet they had higher cholesterol levels than those of the control group. EndoPAT© (Itamar Medical) testing showed that they had poor vascular function.
“In fact, one-third of the women [with hypothalamic amenorrhea] entered the trial with a diagnosis of what would be considered endothelial dysfunction,” Dr. Shufelt said. “Our results demonstrated significantly higher circulating levels of serum proinflammatory cytokines in the women with hypothalamic amenorrhea compared to eumenorrheic controls.”
Dr. Shufelt’s team then tested whether giving estradiol to the women with hypothalamic amenorrhea for 12 weeks would improve their vascular health, but they saw no significant differences between the women who received estrogen and those who received placebo.
“Endothelial function is partly mediated by estrogen, and it was expected that giving back estrogen would ‘fix’ the endothelium, but that is not what happened,” Nanette Santoro, MD, professor and chair of obstetrics and gynecology at the University of Colorado at Denver, Aurora, said in interview. “The mechanisms that maintain vascular function in women are not limited to hormones,” said Dr. Santoro, who was not involved in Dr. Shufelt’s study but attended her lecture. “We need to think beyond the simple model of estrogen-good, no-estrogen-bad.”
Dr. Santoro noted how easy it is to overlook the women who may have cardiovascular risk because of hypothalamic amenorrhea.
“Because many women with functional hypothalamic amenorrhea are super athletic and do not have the typical features of people with cardiometabolic disease – such as glucose intolerance, obesity, abnormal cholesterol or triglycerides, or high blood pressure – clinicians tend to think of them as healthy and to think that simply giving back hormones will fix the problems with bone density and vascular function, but that is not enough,” Dr. Santoro said. “The cognitive-behavioral therapy model for treatment of women with functional hypothalamic amenorrhea addresses the stress-related factors that drive the disorder, and this needs to be considered the standard of care for treatment.”
Stephanie S. Faubion, MD, professor of medicine and director of Mayo Clinic’s Center for Women’s Health in Jacksonville, Fla., who was not involved in Dr. Shufelt’s presentation, also emphasized the importance of recognizing functional hypothalamic amenorrhea.
“This is an underrecognized entity to begin with, and the fact that these women appear to be at increased risk for vascular dysfunction and potentially increased risk for cardiovascular disease down the road makes it even more important for clinicians to identify them and provide interventions early on,” Dr. Faubion said in an interview. “These women need to be identified and the etiology of the amenorrhea addressed, whether it relates to overexercising, being underweight, or experiencing significant stressors that have led to the loss of menstrual cycles.”
Dr. Shufelt’s research was funded by the National Institutes of Health. She had no disclosures. Dr. Santoro is a member of the scientific advisory board for Astellas, Menogenix, Amazon Ember, and Que Oncology, and she consults for Ansh Labs. Dr. Faubion had no disclosures.
The relationship between estrogen levels and heart health makes it particularly important for clinicians to be aware of those patients who might be at risk for cardiovascular disease despite not having other traditional risk factors, according to a presentation Oct. 12 at the North American Menopause Society annual meeting in Atlanta.
”Endogenous estrogens are protective for cardiovascular disease in premenopausal women,” Chrisandra L. Shufelt, MD, chair of the division of general internal medicine and associate director of the Women’s Health Research Center at Mayo Clinic in Jacksonville, Fla., told attendees. Yet, “a substantial population of young women are dying prematurely from cardiovascular disease,” with rates of cardiovascular death increasing in women aged 35-44 even as rates have decreased in postmenopausal women and in men. One potential reason may be premature estrogen loss.
Dr. Shufelt reminded attendees of four major causes of premature estrogen loss: Natural premature menopause, surgical menopause, chemotherapy-induced menopause, and premature ovarian insufficiency. But she would go on to discuss a less widely recognized condition, functional hypothalamic amenorrhea, that also may be contributing to increased cardiovascular risk.
First, Dr. Shufelt reviewed the evidence supporting the relationship between estrogen and cardiovascular health, starting with the Framingham study’s findings that cardiovascular disease is approximately two to four times more common in postmenopausal women than in premenopausal women, depending on the age range.
“Menopause at an early age, particularly under the age of 40, matters,” Dr. Shufelt said. “So we should be discussing this with our patients.”
Surgical menopause makes a difference to cardiovascular health as well, she said. In women under age 35, for example, the risk of a nonfatal heart attack in those with a bilateral oophorectomy was 7.7 times greater than in women who retained both ovaries and their uterus, and 1.5 times greater in women who had a hysterectomy without bilateral oophorectomy.
In a 2019 study, surgical premature menopause was associated with an 87% increased risk of heart disease even after researchers accounted for age, cardiovascular risk factors, and some forms of hormone therapy. The increased risk from natural premature menopause, on the other hand, was lower – a 36% increased risk of heart disease – compared with those producing endogenous hormones. Although randomized controlled trials are unavailable and unlikely to be done, the Nurses’ Health Study and the Danish Nurses Cohort Study, both observational studies, found that heart disease risk was diminished in those taking hormone therapy after surgical premature menopause.
Recommendations for premature or early menopause, from a wide range of different medical societies including NAMS, are that women without contraindications be given estrogen-based hormone therapy until the average age of natural menopause. Though not included in the same guidance, research has also shown that estrogen after oophorectomy does not increase the risk of breast cancer in women with a BRCA1 mutation, Dr. Shufelt said. Hormone therapy for premature or early menopause should adequately replace the levels women have lost and that means younger menopausal women often need higher doses than what older women receive, such as 2 mg/day of oral estradiol rather than the standard doses of 0.5 or 1 mg/day.
Functional hypothalamic amenorrhea and cardiovascular risk
Dr. Shufelt then discussed functional hypothalamic amenorrhea (hypogonadotropic hypogonadism), a common type of secondary amenorrhea that affects at least 1.4 million U.S. women. Diagnosis includes lack of a period for at least 3 months in someone who previously menstruated plus lab values below 50 pg/mL for estradiol, below 10 mIU/L for follicle stimulating hormone, and below 10 mIU/L for luteinizing hormone. Causes of this reversible form of infertility can include stress, overexercising, undereating, or some combination of these, plus an underlying genetic predisposition.
“After ruling out polycystic ovary syndrome, prolactinoma, and thyroid dysfunction, clinicians need to consider the diagnosis of hypothalamic amenorrhea,” Dr. Shufelt said. This condition goes beyond low estrogen levels: Women have elevated cortisol, low thyroid levels, low leptin levels, and increased ghrelin.
”This is not going away,” Dr. Shufelt said, sharing data on stress levels among U.S. adults, particularly Gen Z and millennial adults, noting that the ongoing “national mental health crisis” may be contributing to functional hypothalamic amenorrhea.
A 2020 substudy from the Nurses’ Health Study II found an increased risk of premature death in those who didn’t have a period or always had irregular periods starting as early as 14-17 years old. The increased risk of premature death rose with age in those with irregular or absent cycles – a 37% higher risk in 18- to 22-year-olds and a 39% increased risk in 29- to 46-year-olds.
But clinicians aren’t adequately identifying the “phenotype of the hypothalamic women,” Dr. Shufelt said, despite research showing overlap between hypothalamic amenorrhea and a higher risk of cardiovascular disease. Hypothalamic amenorrhea is so understudied that the last original research on the topic was in 2008, Dr. Shufelt said in an interview. ”No research except mine has been done to evaluate heart health in these young women,” she said.
Dr. Shufelt described a study she led involving 30 women with functional hypothalamic amenorrhea, 29 women with normal menstrual cycles, and 30 women who were recently menopausal and not on hormone therapy. The women with hypothalamic amenorrhea had average stress levels but their depression scores were higher than those of the other two groups.
The results showed that women with hypothalamic amenorrhea had lower estradiol and leptin levels and higher testosterone levels compared with the control group, and they had higher cortisol levels than those of both groups. Despite having similar body mass indexes as the control and menopausal groups, women with hypothalamic amenorrhea had lower blood pressure than that of the other two groups, yet they had higher cholesterol levels than those of the control group. EndoPAT© (Itamar Medical) testing showed that they had poor vascular function.
“In fact, one-third of the women [with hypothalamic amenorrhea] entered the trial with a diagnosis of what would be considered endothelial dysfunction,” Dr. Shufelt said. “Our results demonstrated significantly higher circulating levels of serum proinflammatory cytokines in the women with hypothalamic amenorrhea compared to eumenorrheic controls.”
Dr. Shufelt’s team then tested whether giving estradiol to the women with hypothalamic amenorrhea for 12 weeks would improve their vascular health, but they saw no significant differences between the women who received estrogen and those who received placebo.
“Endothelial function is partly mediated by estrogen, and it was expected that giving back estrogen would ‘fix’ the endothelium, but that is not what happened,” Nanette Santoro, MD, professor and chair of obstetrics and gynecology at the University of Colorado at Denver, Aurora, said in interview. “The mechanisms that maintain vascular function in women are not limited to hormones,” said Dr. Santoro, who was not involved in Dr. Shufelt’s study but attended her lecture. “We need to think beyond the simple model of estrogen-good, no-estrogen-bad.”
Dr. Santoro noted how easy it is to overlook the women who may have cardiovascular risk because of hypothalamic amenorrhea.
“Because many women with functional hypothalamic amenorrhea are super athletic and do not have the typical features of people with cardiometabolic disease – such as glucose intolerance, obesity, abnormal cholesterol or triglycerides, or high blood pressure – clinicians tend to think of them as healthy and to think that simply giving back hormones will fix the problems with bone density and vascular function, but that is not enough,” Dr. Santoro said. “The cognitive-behavioral therapy model for treatment of women with functional hypothalamic amenorrhea addresses the stress-related factors that drive the disorder, and this needs to be considered the standard of care for treatment.”
Stephanie S. Faubion, MD, professor of medicine and director of Mayo Clinic’s Center for Women’s Health in Jacksonville, Fla., who was not involved in Dr. Shufelt’s presentation, also emphasized the importance of recognizing functional hypothalamic amenorrhea.
“This is an underrecognized entity to begin with, and the fact that these women appear to be at increased risk for vascular dysfunction and potentially increased risk for cardiovascular disease down the road makes it even more important for clinicians to identify them and provide interventions early on,” Dr. Faubion said in an interview. “These women need to be identified and the etiology of the amenorrhea addressed, whether it relates to overexercising, being underweight, or experiencing significant stressors that have led to the loss of menstrual cycles.”
Dr. Shufelt’s research was funded by the National Institutes of Health. She had no disclosures. Dr. Santoro is a member of the scientific advisory board for Astellas, Menogenix, Amazon Ember, and Que Oncology, and she consults for Ansh Labs. Dr. Faubion had no disclosures.
The relationship between estrogen levels and heart health makes it particularly important for clinicians to be aware of those patients who might be at risk for cardiovascular disease despite not having other traditional risk factors, according to a presentation Oct. 12 at the North American Menopause Society annual meeting in Atlanta.
”Endogenous estrogens are protective for cardiovascular disease in premenopausal women,” Chrisandra L. Shufelt, MD, chair of the division of general internal medicine and associate director of the Women’s Health Research Center at Mayo Clinic in Jacksonville, Fla., told attendees. Yet, “a substantial population of young women are dying prematurely from cardiovascular disease,” with rates of cardiovascular death increasing in women aged 35-44 even as rates have decreased in postmenopausal women and in men. One potential reason may be premature estrogen loss.
Dr. Shufelt reminded attendees of four major causes of premature estrogen loss: Natural premature menopause, surgical menopause, chemotherapy-induced menopause, and premature ovarian insufficiency. But she would go on to discuss a less widely recognized condition, functional hypothalamic amenorrhea, that also may be contributing to increased cardiovascular risk.
First, Dr. Shufelt reviewed the evidence supporting the relationship between estrogen and cardiovascular health, starting with the Framingham study’s findings that cardiovascular disease is approximately two to four times more common in postmenopausal women than in premenopausal women, depending on the age range.
“Menopause at an early age, particularly under the age of 40, matters,” Dr. Shufelt said. “So we should be discussing this with our patients.”
Surgical menopause makes a difference to cardiovascular health as well, she said. In women under age 35, for example, the risk of a nonfatal heart attack in those with a bilateral oophorectomy was 7.7 times greater than in women who retained both ovaries and their uterus, and 1.5 times greater in women who had a hysterectomy without bilateral oophorectomy.
In a 2019 study, surgical premature menopause was associated with an 87% increased risk of heart disease even after researchers accounted for age, cardiovascular risk factors, and some forms of hormone therapy. The increased risk from natural premature menopause, on the other hand, was lower – a 36% increased risk of heart disease – compared with those producing endogenous hormones. Although randomized controlled trials are unavailable and unlikely to be done, the Nurses’ Health Study and the Danish Nurses Cohort Study, both observational studies, found that heart disease risk was diminished in those taking hormone therapy after surgical premature menopause.
Recommendations for premature or early menopause, from a wide range of different medical societies including NAMS, are that women without contraindications be given estrogen-based hormone therapy until the average age of natural menopause. Though not included in the same guidance, research has also shown that estrogen after oophorectomy does not increase the risk of breast cancer in women with a BRCA1 mutation, Dr. Shufelt said. Hormone therapy for premature or early menopause should adequately replace the levels women have lost and that means younger menopausal women often need higher doses than what older women receive, such as 2 mg/day of oral estradiol rather than the standard doses of 0.5 or 1 mg/day.
Functional hypothalamic amenorrhea and cardiovascular risk
Dr. Shufelt then discussed functional hypothalamic amenorrhea (hypogonadotropic hypogonadism), a common type of secondary amenorrhea that affects at least 1.4 million U.S. women. Diagnosis includes lack of a period for at least 3 months in someone who previously menstruated plus lab values below 50 pg/mL for estradiol, below 10 mIU/L for follicle stimulating hormone, and below 10 mIU/L for luteinizing hormone. Causes of this reversible form of infertility can include stress, overexercising, undereating, or some combination of these, plus an underlying genetic predisposition.
“After ruling out polycystic ovary syndrome, prolactinoma, and thyroid dysfunction, clinicians need to consider the diagnosis of hypothalamic amenorrhea,” Dr. Shufelt said. This condition goes beyond low estrogen levels: Women have elevated cortisol, low thyroid levels, low leptin levels, and increased ghrelin.
”This is not going away,” Dr. Shufelt said, sharing data on stress levels among U.S. adults, particularly Gen Z and millennial adults, noting that the ongoing “national mental health crisis” may be contributing to functional hypothalamic amenorrhea.
A 2020 substudy from the Nurses’ Health Study II found an increased risk of premature death in those who didn’t have a period or always had irregular periods starting as early as 14-17 years old. The increased risk of premature death rose with age in those with irregular or absent cycles – a 37% higher risk in 18- to 22-year-olds and a 39% increased risk in 29- to 46-year-olds.
But clinicians aren’t adequately identifying the “phenotype of the hypothalamic women,” Dr. Shufelt said, despite research showing overlap between hypothalamic amenorrhea and a higher risk of cardiovascular disease. Hypothalamic amenorrhea is so understudied that the last original research on the topic was in 2008, Dr. Shufelt said in an interview. ”No research except mine has been done to evaluate heart health in these young women,” she said.
Dr. Shufelt described a study she led involving 30 women with functional hypothalamic amenorrhea, 29 women with normal menstrual cycles, and 30 women who were recently menopausal and not on hormone therapy. The women with hypothalamic amenorrhea had average stress levels but their depression scores were higher than those of the other two groups.
The results showed that women with hypothalamic amenorrhea had lower estradiol and leptin levels and higher testosterone levels compared with the control group, and they had higher cortisol levels than those of both groups. Despite having similar body mass indexes as the control and menopausal groups, women with hypothalamic amenorrhea had lower blood pressure than that of the other two groups, yet they had higher cholesterol levels than those of the control group. EndoPAT© (Itamar Medical) testing showed that they had poor vascular function.
“In fact, one-third of the women [with hypothalamic amenorrhea] entered the trial with a diagnosis of what would be considered endothelial dysfunction,” Dr. Shufelt said. “Our results demonstrated significantly higher circulating levels of serum proinflammatory cytokines in the women with hypothalamic amenorrhea compared to eumenorrheic controls.”
Dr. Shufelt’s team then tested whether giving estradiol to the women with hypothalamic amenorrhea for 12 weeks would improve their vascular health, but they saw no significant differences between the women who received estrogen and those who received placebo.
“Endothelial function is partly mediated by estrogen, and it was expected that giving back estrogen would ‘fix’ the endothelium, but that is not what happened,” Nanette Santoro, MD, professor and chair of obstetrics and gynecology at the University of Colorado at Denver, Aurora, said in interview. “The mechanisms that maintain vascular function in women are not limited to hormones,” said Dr. Santoro, who was not involved in Dr. Shufelt’s study but attended her lecture. “We need to think beyond the simple model of estrogen-good, no-estrogen-bad.”
Dr. Santoro noted how easy it is to overlook the women who may have cardiovascular risk because of hypothalamic amenorrhea.
“Because many women with functional hypothalamic amenorrhea are super athletic and do not have the typical features of people with cardiometabolic disease – such as glucose intolerance, obesity, abnormal cholesterol or triglycerides, or high blood pressure – clinicians tend to think of them as healthy and to think that simply giving back hormones will fix the problems with bone density and vascular function, but that is not enough,” Dr. Santoro said. “The cognitive-behavioral therapy model for treatment of women with functional hypothalamic amenorrhea addresses the stress-related factors that drive the disorder, and this needs to be considered the standard of care for treatment.”
Stephanie S. Faubion, MD, professor of medicine and director of Mayo Clinic’s Center for Women’s Health in Jacksonville, Fla., who was not involved in Dr. Shufelt’s presentation, also emphasized the importance of recognizing functional hypothalamic amenorrhea.
“This is an underrecognized entity to begin with, and the fact that these women appear to be at increased risk for vascular dysfunction and potentially increased risk for cardiovascular disease down the road makes it even more important for clinicians to identify them and provide interventions early on,” Dr. Faubion said in an interview. “These women need to be identified and the etiology of the amenorrhea addressed, whether it relates to overexercising, being underweight, or experiencing significant stressors that have led to the loss of menstrual cycles.”
Dr. Shufelt’s research was funded by the National Institutes of Health. She had no disclosures. Dr. Santoro is a member of the scientific advisory board for Astellas, Menogenix, Amazon Ember, and Que Oncology, and she consults for Ansh Labs. Dr. Faubion had no disclosures.
FROM NAMS 2022
Milk bad, cheese not? Dairy products tied to different CVD risks
The study, which analyzed a cohort from the Western Norway B-vitamin Intervention Trial (WENBIT), showed that higher dairy and milk consumption were associated with increased risk of mortality and stroke and butter was associated with an increased risk of acute myocardial infarction (AMI), but that cheese was associated with a decreased risk of AMI.
The findings are published in the European Journal of Preventive Cardiology.
“Dairy is a diverse food group, and different dairy products should be considered individually and not only in combination,” senior author Vegard Lysne, MSc, of the Centre for Nutrition, University of Bergen and the department of heart disease, Haukeland University Hospital, Bergen, Norway, said in an interview.
“Today’s dietary recommendations regarding dairy products are mainly based on the nutrient contents, with a focus on calcium, iodine, and saturated fat,” Dr. Lysne said.
Previous studies have indicated that different dairy products may influence cardiovascular health differently, even in opposite directions, but this has primarily been investigated in healthy populations, he noted.
“Data on CVD patients are scarce, and therefore, we wanted to investigate this in a population of patients with established CVD. Our primary aim in this study was to explore how the intake of different dairy products might be linked to cardiovascular outcomes and mortality in such a population,” he said.
The researchers analyzed 1,929 patients who had stable angina pectoris and were participants in WENBIT, a randomized, double-blind, placebo-controlled prospective secondary prevention study investigating the effect of vitamin B treatment on mortality and cardiovascular outcomes.
The majority, 80%, of the cohort were men, and the mean age of the patients was 61.8 years. In addition to stable angina pectoris, 47% of the cohort had hypertension, 31% had diabetes, and 29% were smokers. Most (90%) of the patients were taking acetylsalicylic acid, 90% were taking statins, and 77% were on beta-blockers.
Dietary data were obtained by a food frequency questionnaire that was given to patients at their first visit and returned either by mail or at a follow-up visit 1 month after the initial visit.
Frequency of consumption was given as times per day, week, month, or never consumed. Quantity was estimated using units such as slices, pieces, etc., or household measures.
The milk variable included high-fat, low-fat, skimmed, or unspecified milk. Cheese included brown cheese, which is a Norwegian caramel-like cheese made from whey, milk, and cream; white cheese; cream cheeses; cooked or processed cheeses; and boxed cheeses.
Total dairy was calculated as the sum, in grams, of milk, cheese, yogurt, cream, sour cream, ice cream, and butter.
Median follow-up times were 5.2 years for stroke, 7.8 years for AMI, and 14.1 years for mortality.
Patients who reported a higher intake of total dairy and milk had a higher risk of stroke and mortality.
Among those who reported a higher intake of total dairy, the hazard ratio for stroke was 1.4 (95% confidence interval [CI], 1.02-1.27).
Among those who reported a higher intake of milk, the HR for stroke was 1.13 (95% CI, 1.02-1.27).
Cardiovascular mortality appeared heightened in those who reported a higher intake of total dairy (HR, 1.06; 95% CI, 1.00-1.12) and in those who reported a higher intake of milk (HR, 1.07; 95% CI, 1.01-1.13).
Similarly, all-cause mortality was greater in those who reported higher total dairy consumption (HR, 1.07; 95% CI, 1.03-1.11) and in those who reported higher milk consumption (HR, 1.06; 95% CI, 1.03-1.10).
Higher cheese intake was inversely associated with AMI risk (HR, 0.92; 95% CI, 0.83-1.02).
Butter was associated with increased AMI risk (HR, 1.10; 95% CI, 0.97-1.24), as well as all-cause mortality (HR, 1.10; 95% CI, 1.00-1.20).
Dr. Lysne stressed that the results are from an observational study, and that doctors should not change what they tell their patients based on the results alone.
“There is a growing literature indicating that cheese might be linked to reduced cardiovascular risk, but if this is a causal effect, or if cheese is a marker of higher socioeconomic status and a healthier overall lifestyle remains unknown,” he said.
“I would like for future studies to evaluate dairy products on an individual basis, rather than a collective one. If the data suggest that different dairy products have distinct health effects, this should be implemented in dietary recommendations,” Dr. Lysne added.
Dairy a heterogeneous food group
“These results are not really surprising, because we have been hearing advice to consume low-fat milk, avoid whole milk, and so on, for a long time, so this study confirms what we already know,” Qi Sun, MD, ScD, associate professor in the departments of nutrition and epidemiology, Harvard T.H. Chan School of Public Health, Boston, told this news organization.
“However, I would be more specific about milk, and I don’t see any data regarding the fat content of the different types of milk. Their data only show the association for total milk. I would like to see data for low-fat milk versus high-fat milk in relation to heart disease,” Dr. Sun said.
“They also say in their conclusion that cheese was associated with a decreased risk of acute myocardial infarction, but as the hazard ratio shows, this is a nonsignificant association,” he said.
Dr. Sun agrees that dairy is a heterogeneous group of foods and that it is best to consider each type separately with regard to cardiovascular health.
“For example, heavy cream contains tons of saturated fat, butter contains a lot of saturated fat. Then there is yogurt, which also comes in regular, reduced-fat and low-fat varieties, which is a fantastic food. I would say it’s very healthy and is associated with a lower risk of heart disease and diabetes, so a good type of dairy. Yogurt and fermented dairy products should be beneficial, at least more so than full-fat milk or butter. I think butter and full-fat milk are still the primary dairy foods for people to avoid to reduce risk for cardiovascular disease,” he said.
Dr. Lysne and Dr. Sun have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The study, which analyzed a cohort from the Western Norway B-vitamin Intervention Trial (WENBIT), showed that higher dairy and milk consumption were associated with increased risk of mortality and stroke and butter was associated with an increased risk of acute myocardial infarction (AMI), but that cheese was associated with a decreased risk of AMI.
The findings are published in the European Journal of Preventive Cardiology.
“Dairy is a diverse food group, and different dairy products should be considered individually and not only in combination,” senior author Vegard Lysne, MSc, of the Centre for Nutrition, University of Bergen and the department of heart disease, Haukeland University Hospital, Bergen, Norway, said in an interview.
“Today’s dietary recommendations regarding dairy products are mainly based on the nutrient contents, with a focus on calcium, iodine, and saturated fat,” Dr. Lysne said.
Previous studies have indicated that different dairy products may influence cardiovascular health differently, even in opposite directions, but this has primarily been investigated in healthy populations, he noted.
“Data on CVD patients are scarce, and therefore, we wanted to investigate this in a population of patients with established CVD. Our primary aim in this study was to explore how the intake of different dairy products might be linked to cardiovascular outcomes and mortality in such a population,” he said.
The researchers analyzed 1,929 patients who had stable angina pectoris and were participants in WENBIT, a randomized, double-blind, placebo-controlled prospective secondary prevention study investigating the effect of vitamin B treatment on mortality and cardiovascular outcomes.
The majority, 80%, of the cohort were men, and the mean age of the patients was 61.8 years. In addition to stable angina pectoris, 47% of the cohort had hypertension, 31% had diabetes, and 29% were smokers. Most (90%) of the patients were taking acetylsalicylic acid, 90% were taking statins, and 77% were on beta-blockers.
Dietary data were obtained by a food frequency questionnaire that was given to patients at their first visit and returned either by mail or at a follow-up visit 1 month after the initial visit.
Frequency of consumption was given as times per day, week, month, or never consumed. Quantity was estimated using units such as slices, pieces, etc., or household measures.
The milk variable included high-fat, low-fat, skimmed, or unspecified milk. Cheese included brown cheese, which is a Norwegian caramel-like cheese made from whey, milk, and cream; white cheese; cream cheeses; cooked or processed cheeses; and boxed cheeses.
Total dairy was calculated as the sum, in grams, of milk, cheese, yogurt, cream, sour cream, ice cream, and butter.
Median follow-up times were 5.2 years for stroke, 7.8 years for AMI, and 14.1 years for mortality.
Patients who reported a higher intake of total dairy and milk had a higher risk of stroke and mortality.
Among those who reported a higher intake of total dairy, the hazard ratio for stroke was 1.4 (95% confidence interval [CI], 1.02-1.27).
Among those who reported a higher intake of milk, the HR for stroke was 1.13 (95% CI, 1.02-1.27).
Cardiovascular mortality appeared heightened in those who reported a higher intake of total dairy (HR, 1.06; 95% CI, 1.00-1.12) and in those who reported a higher intake of milk (HR, 1.07; 95% CI, 1.01-1.13).
Similarly, all-cause mortality was greater in those who reported higher total dairy consumption (HR, 1.07; 95% CI, 1.03-1.11) and in those who reported higher milk consumption (HR, 1.06; 95% CI, 1.03-1.10).
Higher cheese intake was inversely associated with AMI risk (HR, 0.92; 95% CI, 0.83-1.02).
Butter was associated with increased AMI risk (HR, 1.10; 95% CI, 0.97-1.24), as well as all-cause mortality (HR, 1.10; 95% CI, 1.00-1.20).
Dr. Lysne stressed that the results are from an observational study, and that doctors should not change what they tell their patients based on the results alone.
“There is a growing literature indicating that cheese might be linked to reduced cardiovascular risk, but if this is a causal effect, or if cheese is a marker of higher socioeconomic status and a healthier overall lifestyle remains unknown,” he said.
“I would like for future studies to evaluate dairy products on an individual basis, rather than a collective one. If the data suggest that different dairy products have distinct health effects, this should be implemented in dietary recommendations,” Dr. Lysne added.
Dairy a heterogeneous food group
“These results are not really surprising, because we have been hearing advice to consume low-fat milk, avoid whole milk, and so on, for a long time, so this study confirms what we already know,” Qi Sun, MD, ScD, associate professor in the departments of nutrition and epidemiology, Harvard T.H. Chan School of Public Health, Boston, told this news organization.
“However, I would be more specific about milk, and I don’t see any data regarding the fat content of the different types of milk. Their data only show the association for total milk. I would like to see data for low-fat milk versus high-fat milk in relation to heart disease,” Dr. Sun said.
“They also say in their conclusion that cheese was associated with a decreased risk of acute myocardial infarction, but as the hazard ratio shows, this is a nonsignificant association,” he said.
Dr. Sun agrees that dairy is a heterogeneous group of foods and that it is best to consider each type separately with regard to cardiovascular health.
“For example, heavy cream contains tons of saturated fat, butter contains a lot of saturated fat. Then there is yogurt, which also comes in regular, reduced-fat and low-fat varieties, which is a fantastic food. I would say it’s very healthy and is associated with a lower risk of heart disease and diabetes, so a good type of dairy. Yogurt and fermented dairy products should be beneficial, at least more so than full-fat milk or butter. I think butter and full-fat milk are still the primary dairy foods for people to avoid to reduce risk for cardiovascular disease,” he said.
Dr. Lysne and Dr. Sun have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
The study, which analyzed a cohort from the Western Norway B-vitamin Intervention Trial (WENBIT), showed that higher dairy and milk consumption were associated with increased risk of mortality and stroke and butter was associated with an increased risk of acute myocardial infarction (AMI), but that cheese was associated with a decreased risk of AMI.
The findings are published in the European Journal of Preventive Cardiology.
“Dairy is a diverse food group, and different dairy products should be considered individually and not only in combination,” senior author Vegard Lysne, MSc, of the Centre for Nutrition, University of Bergen and the department of heart disease, Haukeland University Hospital, Bergen, Norway, said in an interview.
“Today’s dietary recommendations regarding dairy products are mainly based on the nutrient contents, with a focus on calcium, iodine, and saturated fat,” Dr. Lysne said.
Previous studies have indicated that different dairy products may influence cardiovascular health differently, even in opposite directions, but this has primarily been investigated in healthy populations, he noted.
“Data on CVD patients are scarce, and therefore, we wanted to investigate this in a population of patients with established CVD. Our primary aim in this study was to explore how the intake of different dairy products might be linked to cardiovascular outcomes and mortality in such a population,” he said.
The researchers analyzed 1,929 patients who had stable angina pectoris and were participants in WENBIT, a randomized, double-blind, placebo-controlled prospective secondary prevention study investigating the effect of vitamin B treatment on mortality and cardiovascular outcomes.
The majority, 80%, of the cohort were men, and the mean age of the patients was 61.8 years. In addition to stable angina pectoris, 47% of the cohort had hypertension, 31% had diabetes, and 29% were smokers. Most (90%) of the patients were taking acetylsalicylic acid, 90% were taking statins, and 77% were on beta-blockers.
Dietary data were obtained by a food frequency questionnaire that was given to patients at their first visit and returned either by mail or at a follow-up visit 1 month after the initial visit.
Frequency of consumption was given as times per day, week, month, or never consumed. Quantity was estimated using units such as slices, pieces, etc., or household measures.
The milk variable included high-fat, low-fat, skimmed, or unspecified milk. Cheese included brown cheese, which is a Norwegian caramel-like cheese made from whey, milk, and cream; white cheese; cream cheeses; cooked or processed cheeses; and boxed cheeses.
Total dairy was calculated as the sum, in grams, of milk, cheese, yogurt, cream, sour cream, ice cream, and butter.
Median follow-up times were 5.2 years for stroke, 7.8 years for AMI, and 14.1 years for mortality.
Patients who reported a higher intake of total dairy and milk had a higher risk of stroke and mortality.
Among those who reported a higher intake of total dairy, the hazard ratio for stroke was 1.4 (95% confidence interval [CI], 1.02-1.27).
Among those who reported a higher intake of milk, the HR for stroke was 1.13 (95% CI, 1.02-1.27).
Cardiovascular mortality appeared heightened in those who reported a higher intake of total dairy (HR, 1.06; 95% CI, 1.00-1.12) and in those who reported a higher intake of milk (HR, 1.07; 95% CI, 1.01-1.13).
Similarly, all-cause mortality was greater in those who reported higher total dairy consumption (HR, 1.07; 95% CI, 1.03-1.11) and in those who reported higher milk consumption (HR, 1.06; 95% CI, 1.03-1.10).
Higher cheese intake was inversely associated with AMI risk (HR, 0.92; 95% CI, 0.83-1.02).
Butter was associated with increased AMI risk (HR, 1.10; 95% CI, 0.97-1.24), as well as all-cause mortality (HR, 1.10; 95% CI, 1.00-1.20).
Dr. Lysne stressed that the results are from an observational study, and that doctors should not change what they tell their patients based on the results alone.
“There is a growing literature indicating that cheese might be linked to reduced cardiovascular risk, but if this is a causal effect, or if cheese is a marker of higher socioeconomic status and a healthier overall lifestyle remains unknown,” he said.
“I would like for future studies to evaluate dairy products on an individual basis, rather than a collective one. If the data suggest that different dairy products have distinct health effects, this should be implemented in dietary recommendations,” Dr. Lysne added.
Dairy a heterogeneous food group
“These results are not really surprising, because we have been hearing advice to consume low-fat milk, avoid whole milk, and so on, for a long time, so this study confirms what we already know,” Qi Sun, MD, ScD, associate professor in the departments of nutrition and epidemiology, Harvard T.H. Chan School of Public Health, Boston, told this news organization.
“However, I would be more specific about milk, and I don’t see any data regarding the fat content of the different types of milk. Their data only show the association for total milk. I would like to see data for low-fat milk versus high-fat milk in relation to heart disease,” Dr. Sun said.
“They also say in their conclusion that cheese was associated with a decreased risk of acute myocardial infarction, but as the hazard ratio shows, this is a nonsignificant association,” he said.
Dr. Sun agrees that dairy is a heterogeneous group of foods and that it is best to consider each type separately with regard to cardiovascular health.
“For example, heavy cream contains tons of saturated fat, butter contains a lot of saturated fat. Then there is yogurt, which also comes in regular, reduced-fat and low-fat varieties, which is a fantastic food. I would say it’s very healthy and is associated with a lower risk of heart disease and diabetes, so a good type of dairy. Yogurt and fermented dairy products should be beneficial, at least more so than full-fat milk or butter. I think butter and full-fat milk are still the primary dairy foods for people to avoid to reduce risk for cardiovascular disease,” he said.
Dr. Lysne and Dr. Sun have disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY
Wake-up call on sleep and cardiovascular health
Cardiovascular health (CVH) scores that include sleep predicted CV disease risk among older U.S. adults, supporting the American Heart Association’s recent inclusion of sleep in its own checklist.
For the study, her team compared four versions of LS7 checklists that included sleep in relation to cardiovascular disease (CVD) risk.
“CVH scores that included sleep duration alone as a measure of overall sleep health, as well as scores that included multiple dimensions of sleep health (that is, sleep duration, efficiency, and regularity, daytime sleepiness, and sleep disorders), were both predictive of future CVD,” she said.
Study participants scoring in the highest tertile of the CVH checklists that included sleep had up to a 47% lower CVD risk.
Sleeping 7 hours or more but less than 9 hours nightly was considered “ideal,” according to the study, which was published online in the Journal of the American Heart Association.
Lower the odds
Dr. Makarem and colleagues analyzed data from participants in the Multi-Ethnic Study of Atherosclerosis (MESA) sleep study using overnight polysomnography, 7-day wrist actigraphy, validated questionnaires, and outcomes. They used the data to evaluate the four iterations of an expanded LS7 score:
- Score 1 included sleep duration;
- Score 2 included sleep characteristics linked to CVD in the literature (sleep duration, insomnia, daytime sleepiness, and obstructive sleep apnea [OSA]);
- Score 3 included sleep characteristics associated with CVD in MESA (sleep duration and efficiency, daytime sleepiness, and OSA); and
- Score 4, also based on CVD in MESA, included sleep regularity.
Among 1,920 participants (mean age 69 years; 54% women; 40%, White individuals), the mean LS7 score was 7.3, and the means of the alternate CVH scores that included sleep ranged from 7.4 to 7.8 (scores range from 0 to 14, with higher scores indicating better CVH).
On actigraphy, 63% of participants slept less than 7 hours; 30% slept less than 6 hours; 39% had high night-to-night variability in sleep duration; and 25% had high variability in sleep onset timing.
Overall, 10% had sleep efficiency less than 85%; 14% had excessive daytime sleepiness; 36% had high insomnia symptoms; and 47% had moderate to severe OSA. Short-duration sleepers also had a higher prevalence of overweight/obesity, diabetes, and hypertension and had lower mean LS7 scores.
During a mean follow-up of 4.4 years, 95 prevalent CVD events and 93 incident cases occurred.
Higher scores on all four expanded versions were related to lower odds of having CVD. Participants in the highest versus the lowest tertile of the LS7 score had 75% lower CVD odds (odds ratio, 0.25). Similarly, those in the highest versus the lowest tertile of CVH scores 1 and 2 had 71% and 80% lower odds of prevalent CVD (OR, 0.29 and OR, 0.20), respectively.
Overall, participants in the highest versus lowest tertile of the LS7 score and all CVH scores had up to 80% lower odds of prevalent CVD; those in the highest versus lowest tertile of CVH score 1, which included sleep duration, and CVH score 4, which included multidimensional sleep health, had 43% and 47% lower incident CVD risk (hazard ratios, 0.57 and 0.53), respectively.
The LS7 score alone was not significantly associated with CVD incidence (HR, 0.62).
“Clinicians should ask patients about their sleep health and emphasize the importance of prioritizing sleep for heart disease prevention,” Dr. Makarem said.
Sleep ‘devalued’
“The sleep field has been fighting to get more sleep education into medical education for decades,” AHA volunteer expert Michael A. Grandner, PhD, Director of the Sleep & Health Research Program and of the Behavioral Sleep Medicine Clinic at the University of Arizona College of Medicine, Tucson, said in an interview.
“To my knowledge, there still is not a lot of attention given to it, partly because the culture in medical school and among residents is one of not sleeping,” said Dr. Grandner, who was not involved in the study. “The culture among physicians is ‘Who needs sleep? I function fine without it.’ ”
“Sleep made it to the checklist because it is a biological requirement for human life,” he noted. “We sleep for the same reason we breathe and drink. It’s an imperative. Yet we live in a society that devalues sleep.”
It’s “extremely unusual” for a doctor to ask a patient how they’re sleeping, he said. “It’s also pretty unusual to have sleep-related conversations between doctors and patients, especially in the context of health, not just, ‘Hey, doc, I can’t sleep, throw me a pill.’”
Clinicians should be asking every patient about how they’re sleeping at every visit, Dr. Grandner said. “It’s now part of the official definition of heart health. Just like you would be remiss if you didn’t ask about smoking or test blood pressure, you’d be missing something important by not asking about sleep – something that has similar billing to diet, exercise, blood pressure, and all the other ‘essentials.’ ”
No commercial funding or conflicts of interest were declared.
A version of this article first appeared on Medscape.com.
Cardiovascular health (CVH) scores that include sleep predicted CV disease risk among older U.S. adults, supporting the American Heart Association’s recent inclusion of sleep in its own checklist.
For the study, her team compared four versions of LS7 checklists that included sleep in relation to cardiovascular disease (CVD) risk.
“CVH scores that included sleep duration alone as a measure of overall sleep health, as well as scores that included multiple dimensions of sleep health (that is, sleep duration, efficiency, and regularity, daytime sleepiness, and sleep disorders), were both predictive of future CVD,” she said.
Study participants scoring in the highest tertile of the CVH checklists that included sleep had up to a 47% lower CVD risk.
Sleeping 7 hours or more but less than 9 hours nightly was considered “ideal,” according to the study, which was published online in the Journal of the American Heart Association.
Lower the odds
Dr. Makarem and colleagues analyzed data from participants in the Multi-Ethnic Study of Atherosclerosis (MESA) sleep study using overnight polysomnography, 7-day wrist actigraphy, validated questionnaires, and outcomes. They used the data to evaluate the four iterations of an expanded LS7 score:
- Score 1 included sleep duration;
- Score 2 included sleep characteristics linked to CVD in the literature (sleep duration, insomnia, daytime sleepiness, and obstructive sleep apnea [OSA]);
- Score 3 included sleep characteristics associated with CVD in MESA (sleep duration and efficiency, daytime sleepiness, and OSA); and
- Score 4, also based on CVD in MESA, included sleep regularity.
Among 1,920 participants (mean age 69 years; 54% women; 40%, White individuals), the mean LS7 score was 7.3, and the means of the alternate CVH scores that included sleep ranged from 7.4 to 7.8 (scores range from 0 to 14, with higher scores indicating better CVH).
On actigraphy, 63% of participants slept less than 7 hours; 30% slept less than 6 hours; 39% had high night-to-night variability in sleep duration; and 25% had high variability in sleep onset timing.
Overall, 10% had sleep efficiency less than 85%; 14% had excessive daytime sleepiness; 36% had high insomnia symptoms; and 47% had moderate to severe OSA. Short-duration sleepers also had a higher prevalence of overweight/obesity, diabetes, and hypertension and had lower mean LS7 scores.
During a mean follow-up of 4.4 years, 95 prevalent CVD events and 93 incident cases occurred.
Higher scores on all four expanded versions were related to lower odds of having CVD. Participants in the highest versus the lowest tertile of the LS7 score had 75% lower CVD odds (odds ratio, 0.25). Similarly, those in the highest versus the lowest tertile of CVH scores 1 and 2 had 71% and 80% lower odds of prevalent CVD (OR, 0.29 and OR, 0.20), respectively.
Overall, participants in the highest versus lowest tertile of the LS7 score and all CVH scores had up to 80% lower odds of prevalent CVD; those in the highest versus lowest tertile of CVH score 1, which included sleep duration, and CVH score 4, which included multidimensional sleep health, had 43% and 47% lower incident CVD risk (hazard ratios, 0.57 and 0.53), respectively.
The LS7 score alone was not significantly associated with CVD incidence (HR, 0.62).
“Clinicians should ask patients about their sleep health and emphasize the importance of prioritizing sleep for heart disease prevention,” Dr. Makarem said.
Sleep ‘devalued’
“The sleep field has been fighting to get more sleep education into medical education for decades,” AHA volunteer expert Michael A. Grandner, PhD, Director of the Sleep & Health Research Program and of the Behavioral Sleep Medicine Clinic at the University of Arizona College of Medicine, Tucson, said in an interview.
“To my knowledge, there still is not a lot of attention given to it, partly because the culture in medical school and among residents is one of not sleeping,” said Dr. Grandner, who was not involved in the study. “The culture among physicians is ‘Who needs sleep? I function fine without it.’ ”
“Sleep made it to the checklist because it is a biological requirement for human life,” he noted. “We sleep for the same reason we breathe and drink. It’s an imperative. Yet we live in a society that devalues sleep.”
It’s “extremely unusual” for a doctor to ask a patient how they’re sleeping, he said. “It’s also pretty unusual to have sleep-related conversations between doctors and patients, especially in the context of health, not just, ‘Hey, doc, I can’t sleep, throw me a pill.’”
Clinicians should be asking every patient about how they’re sleeping at every visit, Dr. Grandner said. “It’s now part of the official definition of heart health. Just like you would be remiss if you didn’t ask about smoking or test blood pressure, you’d be missing something important by not asking about sleep – something that has similar billing to diet, exercise, blood pressure, and all the other ‘essentials.’ ”
No commercial funding or conflicts of interest were declared.
A version of this article first appeared on Medscape.com.
Cardiovascular health (CVH) scores that include sleep predicted CV disease risk among older U.S. adults, supporting the American Heart Association’s recent inclusion of sleep in its own checklist.
For the study, her team compared four versions of LS7 checklists that included sleep in relation to cardiovascular disease (CVD) risk.
“CVH scores that included sleep duration alone as a measure of overall sleep health, as well as scores that included multiple dimensions of sleep health (that is, sleep duration, efficiency, and regularity, daytime sleepiness, and sleep disorders), were both predictive of future CVD,” she said.
Study participants scoring in the highest tertile of the CVH checklists that included sleep had up to a 47% lower CVD risk.
Sleeping 7 hours or more but less than 9 hours nightly was considered “ideal,” according to the study, which was published online in the Journal of the American Heart Association.
Lower the odds
Dr. Makarem and colleagues analyzed data from participants in the Multi-Ethnic Study of Atherosclerosis (MESA) sleep study using overnight polysomnography, 7-day wrist actigraphy, validated questionnaires, and outcomes. They used the data to evaluate the four iterations of an expanded LS7 score:
- Score 1 included sleep duration;
- Score 2 included sleep characteristics linked to CVD in the literature (sleep duration, insomnia, daytime sleepiness, and obstructive sleep apnea [OSA]);
- Score 3 included sleep characteristics associated with CVD in MESA (sleep duration and efficiency, daytime sleepiness, and OSA); and
- Score 4, also based on CVD in MESA, included sleep regularity.
Among 1,920 participants (mean age 69 years; 54% women; 40%, White individuals), the mean LS7 score was 7.3, and the means of the alternate CVH scores that included sleep ranged from 7.4 to 7.8 (scores range from 0 to 14, with higher scores indicating better CVH).
On actigraphy, 63% of participants slept less than 7 hours; 30% slept less than 6 hours; 39% had high night-to-night variability in sleep duration; and 25% had high variability in sleep onset timing.
Overall, 10% had sleep efficiency less than 85%; 14% had excessive daytime sleepiness; 36% had high insomnia symptoms; and 47% had moderate to severe OSA. Short-duration sleepers also had a higher prevalence of overweight/obesity, diabetes, and hypertension and had lower mean LS7 scores.
During a mean follow-up of 4.4 years, 95 prevalent CVD events and 93 incident cases occurred.
Higher scores on all four expanded versions were related to lower odds of having CVD. Participants in the highest versus the lowest tertile of the LS7 score had 75% lower CVD odds (odds ratio, 0.25). Similarly, those in the highest versus the lowest tertile of CVH scores 1 and 2 had 71% and 80% lower odds of prevalent CVD (OR, 0.29 and OR, 0.20), respectively.
Overall, participants in the highest versus lowest tertile of the LS7 score and all CVH scores had up to 80% lower odds of prevalent CVD; those in the highest versus lowest tertile of CVH score 1, which included sleep duration, and CVH score 4, which included multidimensional sleep health, had 43% and 47% lower incident CVD risk (hazard ratios, 0.57 and 0.53), respectively.
The LS7 score alone was not significantly associated with CVD incidence (HR, 0.62).
“Clinicians should ask patients about their sleep health and emphasize the importance of prioritizing sleep for heart disease prevention,” Dr. Makarem said.
Sleep ‘devalued’
“The sleep field has been fighting to get more sleep education into medical education for decades,” AHA volunteer expert Michael A. Grandner, PhD, Director of the Sleep & Health Research Program and of the Behavioral Sleep Medicine Clinic at the University of Arizona College of Medicine, Tucson, said in an interview.
“To my knowledge, there still is not a lot of attention given to it, partly because the culture in medical school and among residents is one of not sleeping,” said Dr. Grandner, who was not involved in the study. “The culture among physicians is ‘Who needs sleep? I function fine without it.’ ”
“Sleep made it to the checklist because it is a biological requirement for human life,” he noted. “We sleep for the same reason we breathe and drink. It’s an imperative. Yet we live in a society that devalues sleep.”
It’s “extremely unusual” for a doctor to ask a patient how they’re sleeping, he said. “It’s also pretty unusual to have sleep-related conversations between doctors and patients, especially in the context of health, not just, ‘Hey, doc, I can’t sleep, throw me a pill.’”
Clinicians should be asking every patient about how they’re sleeping at every visit, Dr. Grandner said. “It’s now part of the official definition of heart health. Just like you would be remiss if you didn’t ask about smoking or test blood pressure, you’d be missing something important by not asking about sleep – something that has similar billing to diet, exercise, blood pressure, and all the other ‘essentials.’ ”
No commercial funding or conflicts of interest were declared.
A version of this article first appeared on Medscape.com.
FROM JOURNAL OF THE AMERICAN HEART ASSOCIATION
Don’t be afraid of weight gain with hyperthyroid treatment
MONTREAL – Amid common patient concerns about weight gain in the treatment of hyperthyroidism, findings from a large study suggest the therapy with the most favorable survival rate – radioiodine – is not associated with an increased risk of weight gain or obesity.
“EGRET is the first large study using population-based linked community and hospital data to elucidate the long-term consequences of treatment modalities for hyperthyroidism,” said co-author Kristien Boelaert, MD, PhD, while presenting the research at the American Thyroid Association annual meeting.
“The administration of [radioiodine] for hyperthyroidism is associated with a survival benefit for patients with hyperthyroidism and is not associated with increased risks of becoming obese,” Dr. Boelaert, a professor of endocrinology and consultant endocrinologist with the Institute of Applied Health Research, University of Birmingham, England, told this news organization.
However, “overall, there was a nearly 10% risk of major adverse cardiac events [MACE] in patients with hyperthyroidism regardless of the treatment modality used,” she noted.
Commenting on the findings, Jonathon O. Russell, MD, said the study offers surprising – but encouraging – results.
The discovery that radioiodine shows no increase in weight gain “contradicts numerous previous studies which have consistently demonstrated weight gain following definitive radioiodine,” Dr. Russell told this news organization.
Overall, however, “these findings reinforce our knowledge that definitive treatment of an overactive thyroid leads to a longer life – even if there is some weight gain,” added Dr. Russell, who is chief of the Division of Head and Neck Endocrine Surgery at Johns Hopkins, Baltimore.
Hyperthyroidism associated with serious long-term cardiometabolic issues
Hyperthyroidism is associated with serious long-term cardiovascular and metabolic morbidity and mortality, and treatment is therefore essential. However, the swing to hypothyroidism that often occurs afterward commonly results in regaining the weight lost due to the hyperthyroidism, if not more, potentially leading to obesity and its attendant health risks.
To investigate those risks in relation to the three key hyperthyroidism treatments, the authors conducted the EGRET trial. They identified 62,474 patients in the United Kingdom population-based electronic health record database who had newly diagnosed hyperthyroidism and were treated with antithyroid drugs (73.4%), radioiodine (19.5%), or thyroidectomy (7.1%) between April 1997 and December 2015.
Exclusion criteria included those with less than 6 months of antithyroid drugs as the only form of treatment, thyroid cancer, or pregnancy during the first episode.
With a median follow-up of about 8 years, those who were treated with thyroidectomy had a significantly increased risk of gaining weight, compared with the general population (P < .001), and of developing obesity (body mass index > 30 kg/m2; P = .003), while the corresponding increases with antithyroid drugs and radioiodine were not significantly different, compared with the general population over the same period.
In terms of survival, with an average follow-up of about 11 years per person, about 14% of the cohort died, with rates of 14.4% in the antithyroid drug group, 15.8% in the radioiodine group, and 9.2% in the thyroidectomy group.
Mortality rates were further assessed based on an average treatment effects analysis in which the average change was estimated, compared with the index of antithyroid drugs – for instance, if all were treated instead with radioiodine. In that extension of life analysis, those treated with radioiodine could be expected to die, on average, 1.2 years later than those taking antithyroid drugs (P < .001), while those treated with thyroidectomy would be expected to die 0.6 years later, which was not statistically significant.
Using the same average treatment effects analysis, Dr. Boelaert noted, “we found a slightly increased risk of major adverse cardiovascular events following radioiodine, compared with antithyroid drugs; [however], the risk was very small and may not be clinically relevant.”
“Previous data from our and other groups have shown reduced risks of mortality and cardiovascular death following radioiodine-induced hypothyroidism, although this is not confirmed in all studies.”
Weight gain after hyperthyroid treatment drives concerns
The findings are important because weight gain associated with hyperthyroidism treatment is no small matter for many patients, even prompting a lack of adherence to therapy for some, despite its importance, Dr. Boelaert noted.
“Since the majority of patients lose weight as a consequence of being hyperthyroid, it can be expected that they will at least regain the lost weight and possibly even have a weight overshoot,” she explained. “Indeed, many patients are reluctant to accept definitive treatment with surgery or radioiodine out of fear of weight gain.”
“This may cause difficulties to some patients who occasionally may even stop taking antithyroid drugs to prevent this weight regain. Such lack of adherence may have dire consequences and is likely a contributing factor to the increased mortality in these patients,” she observed.
In a previous study of 1,373 patients, Dr. Boelaert and colleagues found that men treated for hyperthyroidism gained an average of 8.0 kg (17.6 lb), and women gained an average of 5.5 kg (12.1 lb).
Compared with the background population, men were significantly more likely to gain weight over the study period (odds ratio, 1.7; P < .001) as were women (OR, 1.3; P < .001). Also in that study, radioiodine was associated with greater weight gain (0.6 kg; P < .001), compared with antithyroid drug treatment alone.
Dr. Russell added that even when weight gain does occur, the payoff of having treated the potentially serious state of hyperthyroidism is a highly beneficial trade-off.
Ultimately, “the goal of treating any patient with Graves’ should be to get them to become hypothyroid as quickly as possible,” he said. “Patients have options, and all of these options can be safe in the right situation.”
“It is unrealistic to think that going from a hyperthyroid state to a low thyroid state will not result in weight gain for many patients,” Dr. Russell added. “But the key point is that overall health is better despite this weight gain.”
Dr. Boelaert has disclosed consulting fees paid to the University of Birmingham by Lilly and Eisai. Dr. Russell has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
MONTREAL – Amid common patient concerns about weight gain in the treatment of hyperthyroidism, findings from a large study suggest the therapy with the most favorable survival rate – radioiodine – is not associated with an increased risk of weight gain or obesity.
“EGRET is the first large study using population-based linked community and hospital data to elucidate the long-term consequences of treatment modalities for hyperthyroidism,” said co-author Kristien Boelaert, MD, PhD, while presenting the research at the American Thyroid Association annual meeting.
“The administration of [radioiodine] for hyperthyroidism is associated with a survival benefit for patients with hyperthyroidism and is not associated with increased risks of becoming obese,” Dr. Boelaert, a professor of endocrinology and consultant endocrinologist with the Institute of Applied Health Research, University of Birmingham, England, told this news organization.
However, “overall, there was a nearly 10% risk of major adverse cardiac events [MACE] in patients with hyperthyroidism regardless of the treatment modality used,” she noted.
Commenting on the findings, Jonathon O. Russell, MD, said the study offers surprising – but encouraging – results.
The discovery that radioiodine shows no increase in weight gain “contradicts numerous previous studies which have consistently demonstrated weight gain following definitive radioiodine,” Dr. Russell told this news organization.
Overall, however, “these findings reinforce our knowledge that definitive treatment of an overactive thyroid leads to a longer life – even if there is some weight gain,” added Dr. Russell, who is chief of the Division of Head and Neck Endocrine Surgery at Johns Hopkins, Baltimore.
Hyperthyroidism associated with serious long-term cardiometabolic issues
Hyperthyroidism is associated with serious long-term cardiovascular and metabolic morbidity and mortality, and treatment is therefore essential. However, the swing to hypothyroidism that often occurs afterward commonly results in regaining the weight lost due to the hyperthyroidism, if not more, potentially leading to obesity and its attendant health risks.
To investigate those risks in relation to the three key hyperthyroidism treatments, the authors conducted the EGRET trial. They identified 62,474 patients in the United Kingdom population-based electronic health record database who had newly diagnosed hyperthyroidism and were treated with antithyroid drugs (73.4%), radioiodine (19.5%), or thyroidectomy (7.1%) between April 1997 and December 2015.
Exclusion criteria included those with less than 6 months of antithyroid drugs as the only form of treatment, thyroid cancer, or pregnancy during the first episode.
With a median follow-up of about 8 years, those who were treated with thyroidectomy had a significantly increased risk of gaining weight, compared with the general population (P < .001), and of developing obesity (body mass index > 30 kg/m2; P = .003), while the corresponding increases with antithyroid drugs and radioiodine were not significantly different, compared with the general population over the same period.
In terms of survival, with an average follow-up of about 11 years per person, about 14% of the cohort died, with rates of 14.4% in the antithyroid drug group, 15.8% in the radioiodine group, and 9.2% in the thyroidectomy group.
Mortality rates were further assessed based on an average treatment effects analysis in which the average change was estimated, compared with the index of antithyroid drugs – for instance, if all were treated instead with radioiodine. In that extension of life analysis, those treated with radioiodine could be expected to die, on average, 1.2 years later than those taking antithyroid drugs (P < .001), while those treated with thyroidectomy would be expected to die 0.6 years later, which was not statistically significant.
Using the same average treatment effects analysis, Dr. Boelaert noted, “we found a slightly increased risk of major adverse cardiovascular events following radioiodine, compared with antithyroid drugs; [however], the risk was very small and may not be clinically relevant.”
“Previous data from our and other groups have shown reduced risks of mortality and cardiovascular death following radioiodine-induced hypothyroidism, although this is not confirmed in all studies.”
Weight gain after hyperthyroid treatment drives concerns
The findings are important because weight gain associated with hyperthyroidism treatment is no small matter for many patients, even prompting a lack of adherence to therapy for some, despite its importance, Dr. Boelaert noted.
“Since the majority of patients lose weight as a consequence of being hyperthyroid, it can be expected that they will at least regain the lost weight and possibly even have a weight overshoot,” she explained. “Indeed, many patients are reluctant to accept definitive treatment with surgery or radioiodine out of fear of weight gain.”
“This may cause difficulties to some patients who occasionally may even stop taking antithyroid drugs to prevent this weight regain. Such lack of adherence may have dire consequences and is likely a contributing factor to the increased mortality in these patients,” she observed.
In a previous study of 1,373 patients, Dr. Boelaert and colleagues found that men treated for hyperthyroidism gained an average of 8.0 kg (17.6 lb), and women gained an average of 5.5 kg (12.1 lb).
Compared with the background population, men were significantly more likely to gain weight over the study period (odds ratio, 1.7; P < .001) as were women (OR, 1.3; P < .001). Also in that study, radioiodine was associated with greater weight gain (0.6 kg; P < .001), compared with antithyroid drug treatment alone.
Dr. Russell added that even when weight gain does occur, the payoff of having treated the potentially serious state of hyperthyroidism is a highly beneficial trade-off.
Ultimately, “the goal of treating any patient with Graves’ should be to get them to become hypothyroid as quickly as possible,” he said. “Patients have options, and all of these options can be safe in the right situation.”
“It is unrealistic to think that going from a hyperthyroid state to a low thyroid state will not result in weight gain for many patients,” Dr. Russell added. “But the key point is that overall health is better despite this weight gain.”
Dr. Boelaert has disclosed consulting fees paid to the University of Birmingham by Lilly and Eisai. Dr. Russell has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
MONTREAL – Amid common patient concerns about weight gain in the treatment of hyperthyroidism, findings from a large study suggest the therapy with the most favorable survival rate – radioiodine – is not associated with an increased risk of weight gain or obesity.
“EGRET is the first large study using population-based linked community and hospital data to elucidate the long-term consequences of treatment modalities for hyperthyroidism,” said co-author Kristien Boelaert, MD, PhD, while presenting the research at the American Thyroid Association annual meeting.
“The administration of [radioiodine] for hyperthyroidism is associated with a survival benefit for patients with hyperthyroidism and is not associated with increased risks of becoming obese,” Dr. Boelaert, a professor of endocrinology and consultant endocrinologist with the Institute of Applied Health Research, University of Birmingham, England, told this news organization.
However, “overall, there was a nearly 10% risk of major adverse cardiac events [MACE] in patients with hyperthyroidism regardless of the treatment modality used,” she noted.
Commenting on the findings, Jonathon O. Russell, MD, said the study offers surprising – but encouraging – results.
The discovery that radioiodine shows no increase in weight gain “contradicts numerous previous studies which have consistently demonstrated weight gain following definitive radioiodine,” Dr. Russell told this news organization.
Overall, however, “these findings reinforce our knowledge that definitive treatment of an overactive thyroid leads to a longer life – even if there is some weight gain,” added Dr. Russell, who is chief of the Division of Head and Neck Endocrine Surgery at Johns Hopkins, Baltimore.
Hyperthyroidism associated with serious long-term cardiometabolic issues
Hyperthyroidism is associated with serious long-term cardiovascular and metabolic morbidity and mortality, and treatment is therefore essential. However, the swing to hypothyroidism that often occurs afterward commonly results in regaining the weight lost due to the hyperthyroidism, if not more, potentially leading to obesity and its attendant health risks.
To investigate those risks in relation to the three key hyperthyroidism treatments, the authors conducted the EGRET trial. They identified 62,474 patients in the United Kingdom population-based electronic health record database who had newly diagnosed hyperthyroidism and were treated with antithyroid drugs (73.4%), radioiodine (19.5%), or thyroidectomy (7.1%) between April 1997 and December 2015.
Exclusion criteria included those with less than 6 months of antithyroid drugs as the only form of treatment, thyroid cancer, or pregnancy during the first episode.
With a median follow-up of about 8 years, those who were treated with thyroidectomy had a significantly increased risk of gaining weight, compared with the general population (P < .001), and of developing obesity (body mass index > 30 kg/m2; P = .003), while the corresponding increases with antithyroid drugs and radioiodine were not significantly different, compared with the general population over the same period.
In terms of survival, with an average follow-up of about 11 years per person, about 14% of the cohort died, with rates of 14.4% in the antithyroid drug group, 15.8% in the radioiodine group, and 9.2% in the thyroidectomy group.
Mortality rates were further assessed based on an average treatment effects analysis in which the average change was estimated, compared with the index of antithyroid drugs – for instance, if all were treated instead with radioiodine. In that extension of life analysis, those treated with radioiodine could be expected to die, on average, 1.2 years later than those taking antithyroid drugs (P < .001), while those treated with thyroidectomy would be expected to die 0.6 years later, which was not statistically significant.
Using the same average treatment effects analysis, Dr. Boelaert noted, “we found a slightly increased risk of major adverse cardiovascular events following radioiodine, compared with antithyroid drugs; [however], the risk was very small and may not be clinically relevant.”
“Previous data from our and other groups have shown reduced risks of mortality and cardiovascular death following radioiodine-induced hypothyroidism, although this is not confirmed in all studies.”
Weight gain after hyperthyroid treatment drives concerns
The findings are important because weight gain associated with hyperthyroidism treatment is no small matter for many patients, even prompting a lack of adherence to therapy for some, despite its importance, Dr. Boelaert noted.
“Since the majority of patients lose weight as a consequence of being hyperthyroid, it can be expected that they will at least regain the lost weight and possibly even have a weight overshoot,” she explained. “Indeed, many patients are reluctant to accept definitive treatment with surgery or radioiodine out of fear of weight gain.”
“This may cause difficulties to some patients who occasionally may even stop taking antithyroid drugs to prevent this weight regain. Such lack of adherence may have dire consequences and is likely a contributing factor to the increased mortality in these patients,” she observed.
In a previous study of 1,373 patients, Dr. Boelaert and colleagues found that men treated for hyperthyroidism gained an average of 8.0 kg (17.6 lb), and women gained an average of 5.5 kg (12.1 lb).
Compared with the background population, men were significantly more likely to gain weight over the study period (odds ratio, 1.7; P < .001) as were women (OR, 1.3; P < .001). Also in that study, radioiodine was associated with greater weight gain (0.6 kg; P < .001), compared with antithyroid drug treatment alone.
Dr. Russell added that even when weight gain does occur, the payoff of having treated the potentially serious state of hyperthyroidism is a highly beneficial trade-off.
Ultimately, “the goal of treating any patient with Graves’ should be to get them to become hypothyroid as quickly as possible,” he said. “Patients have options, and all of these options can be safe in the right situation.”
“It is unrealistic to think that going from a hyperthyroid state to a low thyroid state will not result in weight gain for many patients,” Dr. Russell added. “But the key point is that overall health is better despite this weight gain.”
Dr. Boelaert has disclosed consulting fees paid to the University of Birmingham by Lilly and Eisai. Dr. Russell has reported no relevant financial relationships.
A version of this article first appeared on Medscape.com.
AT ATA 2022
Diabetes becoming less potent risk factor for CVD events
Diabetes persists as a risk factor for cardiovascular events, but where it once meant the same risk of heart attack or stroke as cardiovascular disease itself, a large Canadian population study reports that’s no longer the case. Thanks to advances in diabetes management over the past quarter century, diabetes is no longer considered equivalent to CVD as a risk factor for cardiovascular events, researchers from the University of Toronto reported.
The retrospective, population-based study used administrative data from Ontario’s provincial universal health care system. The researchers created five population-based cohorts of adults at 5-year intervals from 1994 to 2014, consisting of 1.87 million adults in the first cohort and 1.5 million in the last. In that 20-year span, the prevalence of diabetes in this population tripled, from 3.1% to 9%.
“In the last 25 years we’ve seen wholesale changes in the way people approach diabetes,” lead study author Calvin Ke, MD, PhD, an endocrinologist and assistant professor at the University of Toronto, said in an interview. “Part of the findings show that diabetes and cardiovascular disease were equivalent for risk of cardiovascular events in 1994, but by 2014 that was not the case.”
However, Dr. Ke added, “Diabetes is still a very strong cardiovascular risk factor.”
The investigators for the study, reported as a research letter in JAMA, analyzed the risk of cardiovascular events in four subgroups: those who had both diabetes and CVD, CVD only, diabetes only, and no CVD or diabetes.
Between 1994 and 2014, the cardiovascular event rates declined significantly among people with diabetes alone, compared with people with no disease: from 28.4 to 12.7 per 1,000 person-years, or an absolute risk increase (ARI) of 4.4% and a relative risk (RR) more than double (2.06), in 1994 to 14 vs. 8 per 1,000 person-years, and an ARI of 2% and RR less than double (1.58) 20 years later.
Among people with CVD only, those values shifted from 36.1 per 1,000 person-years, ARI of 5.1% and RR of 2.16 in 1994 to 23.9, ARI of 3.7% and RR still more than double (2.06) in 2014.
People with both CVD and diabetes had the highest CVD event rates across all 5-year cohorts: 74 per 1,000 person-years, ARI of 12% and RR almost four times greater (3.81) in 1994 than people with no disease. By 2014, the ARI in this group was 7.6% and the RR 3.10.
The investigators calculated that event rates from 1994 to 2014 declined across all four subgroups, with rate ratios of 0.49 for diabetes only, 0.66 for CVD only, 0.60 for both diabetes and CVD, and 0.63 for neither disease.
Shift in practice
The study noted that the shift in diabetes as a risk factor for heart attack and stroke is “a change that likely reflects the use of modern, multifactorial approaches to diabetes.”
“A number of changes have occurred in practice that really focus on this idea of a multifactorial approach to diabetes: more aggressive management of blood sugar, blood pressure, and lipids,” Dr. Ke said. “We know from the statin trials that statins can reduce the risk of heart disease significantly, and the use of statins increased from 28.4% in 1999 to 56.3% in 2018 in the United States,” Dr. Ke said. He added that statin use in Canada in adults ages 40 and older went from 1.2% in 1994 to 58.4% in 2010-2015. Use of ACE inhibitors and angiotensin receptor blockers for hypertension followed similar trends, contributing further to reducing risks for heart attack and stroke, Dr. Ke said.
Dr. Ke also noted that the evolution of guidelines and advances in treatments for both CVD and diabetes since 1994 have contributed to improving risks for people with diabetes. SGLT2 inhibitors have been linked to a 2%-6% reduction in hemoglobin A1c, he said. “All of these factors combined have had a major effect on the reduced risk of cardiovascular events.”
Prakash Deedwania, MD, professor at the University of California, San Francisco, Fresno, said that this study confirms a trend that others have reported regarding the risk of CVD in diabetes. The large database covering millions of adults is a study strength, he said.
And the findings, Dr. Deedwania added, underscore what’s been published in clinical guidelines, notably the American Heart Association scientific statement for managing CVD risk in patients with diabetes. “This means that, from observations made 20-plus years ago, when most people were not being treated for diabetes or heart disease, the pendulum has swung,” he said.
However, he added, “The authors state clearly that it does not mean that diabetes is not associated with a higher risk of cardiovascular events; it just means it is no longer equivalent to CVD.”
Managing diabetes continues to be “particularly important,” Dr. Deedwania said, because the prevalence of diabetes continues to rise. “This is a phenomenal risk, and it emphasizes that, to really conquer or control diabetes, we should make every effort to prevent diabetes,” he said.
Dr. Ke and Dr. Deedwania have no relevant financial relationships to disclose.
Diabetes persists as a risk factor for cardiovascular events, but where it once meant the same risk of heart attack or stroke as cardiovascular disease itself, a large Canadian population study reports that’s no longer the case. Thanks to advances in diabetes management over the past quarter century, diabetes is no longer considered equivalent to CVD as a risk factor for cardiovascular events, researchers from the University of Toronto reported.
The retrospective, population-based study used administrative data from Ontario’s provincial universal health care system. The researchers created five population-based cohorts of adults at 5-year intervals from 1994 to 2014, consisting of 1.87 million adults in the first cohort and 1.5 million in the last. In that 20-year span, the prevalence of diabetes in this population tripled, from 3.1% to 9%.
“In the last 25 years we’ve seen wholesale changes in the way people approach diabetes,” lead study author Calvin Ke, MD, PhD, an endocrinologist and assistant professor at the University of Toronto, said in an interview. “Part of the findings show that diabetes and cardiovascular disease were equivalent for risk of cardiovascular events in 1994, but by 2014 that was not the case.”
However, Dr. Ke added, “Diabetes is still a very strong cardiovascular risk factor.”
The investigators for the study, reported as a research letter in JAMA, analyzed the risk of cardiovascular events in four subgroups: those who had both diabetes and CVD, CVD only, diabetes only, and no CVD or diabetes.
Between 1994 and 2014, the cardiovascular event rates declined significantly among people with diabetes alone, compared with people with no disease: from 28.4 to 12.7 per 1,000 person-years, or an absolute risk increase (ARI) of 4.4% and a relative risk (RR) more than double (2.06), in 1994 to 14 vs. 8 per 1,000 person-years, and an ARI of 2% and RR less than double (1.58) 20 years later.
Among people with CVD only, those values shifted from 36.1 per 1,000 person-years, ARI of 5.1% and RR of 2.16 in 1994 to 23.9, ARI of 3.7% and RR still more than double (2.06) in 2014.
People with both CVD and diabetes had the highest CVD event rates across all 5-year cohorts: 74 per 1,000 person-years, ARI of 12% and RR almost four times greater (3.81) in 1994 than people with no disease. By 2014, the ARI in this group was 7.6% and the RR 3.10.
The investigators calculated that event rates from 1994 to 2014 declined across all four subgroups, with rate ratios of 0.49 for diabetes only, 0.66 for CVD only, 0.60 for both diabetes and CVD, and 0.63 for neither disease.
Shift in practice
The study noted that the shift in diabetes as a risk factor for heart attack and stroke is “a change that likely reflects the use of modern, multifactorial approaches to diabetes.”
“A number of changes have occurred in practice that really focus on this idea of a multifactorial approach to diabetes: more aggressive management of blood sugar, blood pressure, and lipids,” Dr. Ke said. “We know from the statin trials that statins can reduce the risk of heart disease significantly, and the use of statins increased from 28.4% in 1999 to 56.3% in 2018 in the United States,” Dr. Ke said. He added that statin use in Canada in adults ages 40 and older went from 1.2% in 1994 to 58.4% in 2010-2015. Use of ACE inhibitors and angiotensin receptor blockers for hypertension followed similar trends, contributing further to reducing risks for heart attack and stroke, Dr. Ke said.
Dr. Ke also noted that the evolution of guidelines and advances in treatments for both CVD and diabetes since 1994 have contributed to improving risks for people with diabetes. SGLT2 inhibitors have been linked to a 2%-6% reduction in hemoglobin A1c, he said. “All of these factors combined have had a major effect on the reduced risk of cardiovascular events.”
Prakash Deedwania, MD, professor at the University of California, San Francisco, Fresno, said that this study confirms a trend that others have reported regarding the risk of CVD in diabetes. The large database covering millions of adults is a study strength, he said.
And the findings, Dr. Deedwania added, underscore what’s been published in clinical guidelines, notably the American Heart Association scientific statement for managing CVD risk in patients with diabetes. “This means that, from observations made 20-plus years ago, when most people were not being treated for diabetes or heart disease, the pendulum has swung,” he said.
However, he added, “The authors state clearly that it does not mean that diabetes is not associated with a higher risk of cardiovascular events; it just means it is no longer equivalent to CVD.”
Managing diabetes continues to be “particularly important,” Dr. Deedwania said, because the prevalence of diabetes continues to rise. “This is a phenomenal risk, and it emphasizes that, to really conquer or control diabetes, we should make every effort to prevent diabetes,” he said.
Dr. Ke and Dr. Deedwania have no relevant financial relationships to disclose.
Diabetes persists as a risk factor for cardiovascular events, but where it once meant the same risk of heart attack or stroke as cardiovascular disease itself, a large Canadian population study reports that’s no longer the case. Thanks to advances in diabetes management over the past quarter century, diabetes is no longer considered equivalent to CVD as a risk factor for cardiovascular events, researchers from the University of Toronto reported.
The retrospective, population-based study used administrative data from Ontario’s provincial universal health care system. The researchers created five population-based cohorts of adults at 5-year intervals from 1994 to 2014, consisting of 1.87 million adults in the first cohort and 1.5 million in the last. In that 20-year span, the prevalence of diabetes in this population tripled, from 3.1% to 9%.
“In the last 25 years we’ve seen wholesale changes in the way people approach diabetes,” lead study author Calvin Ke, MD, PhD, an endocrinologist and assistant professor at the University of Toronto, said in an interview. “Part of the findings show that diabetes and cardiovascular disease were equivalent for risk of cardiovascular events in 1994, but by 2014 that was not the case.”
However, Dr. Ke added, “Diabetes is still a very strong cardiovascular risk factor.”
The investigators for the study, reported as a research letter in JAMA, analyzed the risk of cardiovascular events in four subgroups: those who had both diabetes and CVD, CVD only, diabetes only, and no CVD or diabetes.
Between 1994 and 2014, the cardiovascular event rates declined significantly among people with diabetes alone, compared with people with no disease: from 28.4 to 12.7 per 1,000 person-years, or an absolute risk increase (ARI) of 4.4% and a relative risk (RR) more than double (2.06), in 1994 to 14 vs. 8 per 1,000 person-years, and an ARI of 2% and RR less than double (1.58) 20 years later.
Among people with CVD only, those values shifted from 36.1 per 1,000 person-years, ARI of 5.1% and RR of 2.16 in 1994 to 23.9, ARI of 3.7% and RR still more than double (2.06) in 2014.
People with both CVD and diabetes had the highest CVD event rates across all 5-year cohorts: 74 per 1,000 person-years, ARI of 12% and RR almost four times greater (3.81) in 1994 than people with no disease. By 2014, the ARI in this group was 7.6% and the RR 3.10.
The investigators calculated that event rates from 1994 to 2014 declined across all four subgroups, with rate ratios of 0.49 for diabetes only, 0.66 for CVD only, 0.60 for both diabetes and CVD, and 0.63 for neither disease.
Shift in practice
The study noted that the shift in diabetes as a risk factor for heart attack and stroke is “a change that likely reflects the use of modern, multifactorial approaches to diabetes.”
“A number of changes have occurred in practice that really focus on this idea of a multifactorial approach to diabetes: more aggressive management of blood sugar, blood pressure, and lipids,” Dr. Ke said. “We know from the statin trials that statins can reduce the risk of heart disease significantly, and the use of statins increased from 28.4% in 1999 to 56.3% in 2018 in the United States,” Dr. Ke said. He added that statin use in Canada in adults ages 40 and older went from 1.2% in 1994 to 58.4% in 2010-2015. Use of ACE inhibitors and angiotensin receptor blockers for hypertension followed similar trends, contributing further to reducing risks for heart attack and stroke, Dr. Ke said.
Dr. Ke also noted that the evolution of guidelines and advances in treatments for both CVD and diabetes since 1994 have contributed to improving risks for people with diabetes. SGLT2 inhibitors have been linked to a 2%-6% reduction in hemoglobin A1c, he said. “All of these factors combined have had a major effect on the reduced risk of cardiovascular events.”
Prakash Deedwania, MD, professor at the University of California, San Francisco, Fresno, said that this study confirms a trend that others have reported regarding the risk of CVD in diabetes. The large database covering millions of adults is a study strength, he said.
And the findings, Dr. Deedwania added, underscore what’s been published in clinical guidelines, notably the American Heart Association scientific statement for managing CVD risk in patients with diabetes. “This means that, from observations made 20-plus years ago, when most people were not being treated for diabetes or heart disease, the pendulum has swung,” he said.
However, he added, “The authors state clearly that it does not mean that diabetes is not associated with a higher risk of cardiovascular events; it just means it is no longer equivalent to CVD.”
Managing diabetes continues to be “particularly important,” Dr. Deedwania said, because the prevalence of diabetes continues to rise. “This is a phenomenal risk, and it emphasizes that, to really conquer or control diabetes, we should make every effort to prevent diabetes,” he said.
Dr. Ke and Dr. Deedwania have no relevant financial relationships to disclose.
FROM JAMA
Screening gaps miss childhood heart problems
People with a rare genetic condition that causes extremely elevated levels of low-density lipoprotein cholesterol (LDL-C) may miss out on decades of treatment because of a lack of lipid screening in childhood, researchers reported at the annual meeting of the American Academy of Pediatrics.
The condition, homozygous familial hypercholesterolemia (FH), raises the risk for atherosclerotic cardiovascular disease (ASCVD) as early as the first decade of life.
Routine screening for FH is uncommon, however, the researchers said. Lack of familiarity with guidelines and limited access to lipid specialists have been cited as possible reasons for inconsistent screening practices.
“These findings and recent improvement in lipid lowering therapies make a compelling case for rigorous compliance with AAP’s guidelines on lipid screening for children with a family history of FH or ASCVD at age 2,” study coauthor Mary P. McGowan, MD, chief medical officer of the Family Heart Foundation, said in a statement about the new study.
Early consequences
To characterize patients with homozygous FH, Dr. McGowan and her colleagues examined data from 67 participants in the CASCADE-FH registry. The Family Heart Foundation created the registry in 2013, and 40 medical centers in the United States contribute data to the repository. The researchers had access to data about patients with homozygous FH from 20 centers in the registry.
Dr. McGowan’s group compared 16 patients with homozygous FH who enrolled in the registry when they were children and 51 patients who were adults at the time of their enrollment.
Patients enrolled as children had a median age at diagnosis of 2 years (interquartile range [IQR], 2-3.5), whereas patients enrolled as adults had a median age at diagnosis of 12.6 years (IQR, 4.1-26.5).
The median untreated level of LDL-C in those enrolled as children was 776 mg/dL (IQR, 704-892). Among those enrolled as adults, it was 533 mg/dL (IQR, 467-702).
Approximately 19% of those enrolled as children had evidence of aortic valve stenosis, and 43.8% had evidence of ASCVD. The median age at onset of ASCVD was 8.9 years. One child was diagnosed with ASCVD at age 2 years and underwent liver transplant at age 4 years. Another was diagnosed with the condition at age 3 years and underwent liver transplant at age 8 years. Two children underwent coronary artery bypass grafting at ages 6 years and 14 years. Five participants underwent liver transplant before age 18 years.
About 56% of participants who enrolled as children had xanthomas, or fat deposits in tendons, and none had corneal arcus — a gray-white line of fat deposits around the edge of the cornea, both of which can indicate homozygous FH in children.
Treatment reduced LDL-C substantially, but only 25% of children achieved goal levels of cholesterol, the researchers reported. Patients who received more lipid-lowering therapies had a better chance of reaching their target levels, they found.
The data raise “the possibility that only children with the most severe phenotypes are diagnosed before adulthood,” the researchers said.
Clinical diagnosis of homozygous FH can be based on LDL-C levels, family history, and the presence of xanthomas, the researchers noted. Many children do not have physical findings, however, and a lipid panel or genetic testing may be necessary.
“There is a clear need to implement universal screening” to identify all children with homozygous FH and heterozygous FH, a less severe and more common form of FH, Dr. McGowan said.
Possible missed cases
As many as 1 in 250 people may have heterozygous FH, and 1 in 300,000 people may have homozygous FH, according to estimates. Patients with homozygous FH have two FH genes, one from each parent. In patients with homozygous FH, levels of LDL-C levels typically range between 400 and 1,000 mg/dL without treatment, which is four to 10 times higher than normal concentrations of the blood fat, according to the Family Heart Foundation.
“This study adds to a growing body of literature – including our own work – demonstrating that recommended universal screening occurs in barely 1 in 5 children. This means some patients are not being recognized as having treatable diseases,” said Justin H. Berger, MD, PhD, a pediatric cardiologist at Children’s Hospital of Philadelphia.
Even among children who are at the highest risk for early onset adult-type heart disease, only a quarter to two-thirds receive recommended screening, said Dr. Berger, who was not a member of the study team.
While Dr. Berger advocates universal lipid screening, improving screening rates in practice probably isn’t as simple as telling clinicians to screen more, he said. “Increasing testing will increase health care spending and the burden on busy primary care providers without addressing who will subsequently evaluate and manage children with abnormal lipid screening results,” Dr. Berger said.
Instead, clinicians may want to focus on screening patients who are at risk, which “could have dramatic benefits for their life-long cardiovascular health,” he said.
Dr. McGowan disclosed ties to Abbott and Regeneron, and her coauthors disclosed ties to Esperion Therapeutics and research funding from Regeneron and REGENXBIO. Dr. Berger disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
People with a rare genetic condition that causes extremely elevated levels of low-density lipoprotein cholesterol (LDL-C) may miss out on decades of treatment because of a lack of lipid screening in childhood, researchers reported at the annual meeting of the American Academy of Pediatrics.
The condition, homozygous familial hypercholesterolemia (FH), raises the risk for atherosclerotic cardiovascular disease (ASCVD) as early as the first decade of life.
Routine screening for FH is uncommon, however, the researchers said. Lack of familiarity with guidelines and limited access to lipid specialists have been cited as possible reasons for inconsistent screening practices.
“These findings and recent improvement in lipid lowering therapies make a compelling case for rigorous compliance with AAP’s guidelines on lipid screening for children with a family history of FH or ASCVD at age 2,” study coauthor Mary P. McGowan, MD, chief medical officer of the Family Heart Foundation, said in a statement about the new study.
Early consequences
To characterize patients with homozygous FH, Dr. McGowan and her colleagues examined data from 67 participants in the CASCADE-FH registry. The Family Heart Foundation created the registry in 2013, and 40 medical centers in the United States contribute data to the repository. The researchers had access to data about patients with homozygous FH from 20 centers in the registry.
Dr. McGowan’s group compared 16 patients with homozygous FH who enrolled in the registry when they were children and 51 patients who were adults at the time of their enrollment.
Patients enrolled as children had a median age at diagnosis of 2 years (interquartile range [IQR], 2-3.5), whereas patients enrolled as adults had a median age at diagnosis of 12.6 years (IQR, 4.1-26.5).
The median untreated level of LDL-C in those enrolled as children was 776 mg/dL (IQR, 704-892). Among those enrolled as adults, it was 533 mg/dL (IQR, 467-702).
Approximately 19% of those enrolled as children had evidence of aortic valve stenosis, and 43.8% had evidence of ASCVD. The median age at onset of ASCVD was 8.9 years. One child was diagnosed with ASCVD at age 2 years and underwent liver transplant at age 4 years. Another was diagnosed with the condition at age 3 years and underwent liver transplant at age 8 years. Two children underwent coronary artery bypass grafting at ages 6 years and 14 years. Five participants underwent liver transplant before age 18 years.
About 56% of participants who enrolled as children had xanthomas, or fat deposits in tendons, and none had corneal arcus — a gray-white line of fat deposits around the edge of the cornea, both of which can indicate homozygous FH in children.
Treatment reduced LDL-C substantially, but only 25% of children achieved goal levels of cholesterol, the researchers reported. Patients who received more lipid-lowering therapies had a better chance of reaching their target levels, they found.
The data raise “the possibility that only children with the most severe phenotypes are diagnosed before adulthood,” the researchers said.
Clinical diagnosis of homozygous FH can be based on LDL-C levels, family history, and the presence of xanthomas, the researchers noted. Many children do not have physical findings, however, and a lipid panel or genetic testing may be necessary.
“There is a clear need to implement universal screening” to identify all children with homozygous FH and heterozygous FH, a less severe and more common form of FH, Dr. McGowan said.
Possible missed cases
As many as 1 in 250 people may have heterozygous FH, and 1 in 300,000 people may have homozygous FH, according to estimates. Patients with homozygous FH have two FH genes, one from each parent. In patients with homozygous FH, levels of LDL-C levels typically range between 400 and 1,000 mg/dL without treatment, which is four to 10 times higher than normal concentrations of the blood fat, according to the Family Heart Foundation.
“This study adds to a growing body of literature – including our own work – demonstrating that recommended universal screening occurs in barely 1 in 5 children. This means some patients are not being recognized as having treatable diseases,” said Justin H. Berger, MD, PhD, a pediatric cardiologist at Children’s Hospital of Philadelphia.
Even among children who are at the highest risk for early onset adult-type heart disease, only a quarter to two-thirds receive recommended screening, said Dr. Berger, who was not a member of the study team.
While Dr. Berger advocates universal lipid screening, improving screening rates in practice probably isn’t as simple as telling clinicians to screen more, he said. “Increasing testing will increase health care spending and the burden on busy primary care providers without addressing who will subsequently evaluate and manage children with abnormal lipid screening results,” Dr. Berger said.
Instead, clinicians may want to focus on screening patients who are at risk, which “could have dramatic benefits for their life-long cardiovascular health,” he said.
Dr. McGowan disclosed ties to Abbott and Regeneron, and her coauthors disclosed ties to Esperion Therapeutics and research funding from Regeneron and REGENXBIO. Dr. Berger disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
People with a rare genetic condition that causes extremely elevated levels of low-density lipoprotein cholesterol (LDL-C) may miss out on decades of treatment because of a lack of lipid screening in childhood, researchers reported at the annual meeting of the American Academy of Pediatrics.
The condition, homozygous familial hypercholesterolemia (FH), raises the risk for atherosclerotic cardiovascular disease (ASCVD) as early as the first decade of life.
Routine screening for FH is uncommon, however, the researchers said. Lack of familiarity with guidelines and limited access to lipid specialists have been cited as possible reasons for inconsistent screening practices.
“These findings and recent improvement in lipid lowering therapies make a compelling case for rigorous compliance with AAP’s guidelines on lipid screening for children with a family history of FH or ASCVD at age 2,” study coauthor Mary P. McGowan, MD, chief medical officer of the Family Heart Foundation, said in a statement about the new study.
Early consequences
To characterize patients with homozygous FH, Dr. McGowan and her colleagues examined data from 67 participants in the CASCADE-FH registry. The Family Heart Foundation created the registry in 2013, and 40 medical centers in the United States contribute data to the repository. The researchers had access to data about patients with homozygous FH from 20 centers in the registry.
Dr. McGowan’s group compared 16 patients with homozygous FH who enrolled in the registry when they were children and 51 patients who were adults at the time of their enrollment.
Patients enrolled as children had a median age at diagnosis of 2 years (interquartile range [IQR], 2-3.5), whereas patients enrolled as adults had a median age at diagnosis of 12.6 years (IQR, 4.1-26.5).
The median untreated level of LDL-C in those enrolled as children was 776 mg/dL (IQR, 704-892). Among those enrolled as adults, it was 533 mg/dL (IQR, 467-702).
Approximately 19% of those enrolled as children had evidence of aortic valve stenosis, and 43.8% had evidence of ASCVD. The median age at onset of ASCVD was 8.9 years. One child was diagnosed with ASCVD at age 2 years and underwent liver transplant at age 4 years. Another was diagnosed with the condition at age 3 years and underwent liver transplant at age 8 years. Two children underwent coronary artery bypass grafting at ages 6 years and 14 years. Five participants underwent liver transplant before age 18 years.
About 56% of participants who enrolled as children had xanthomas, or fat deposits in tendons, and none had corneal arcus — a gray-white line of fat deposits around the edge of the cornea, both of which can indicate homozygous FH in children.
Treatment reduced LDL-C substantially, but only 25% of children achieved goal levels of cholesterol, the researchers reported. Patients who received more lipid-lowering therapies had a better chance of reaching their target levels, they found.
The data raise “the possibility that only children with the most severe phenotypes are diagnosed before adulthood,” the researchers said.
Clinical diagnosis of homozygous FH can be based on LDL-C levels, family history, and the presence of xanthomas, the researchers noted. Many children do not have physical findings, however, and a lipid panel or genetic testing may be necessary.
“There is a clear need to implement universal screening” to identify all children with homozygous FH and heterozygous FH, a less severe and more common form of FH, Dr. McGowan said.
Possible missed cases
As many as 1 in 250 people may have heterozygous FH, and 1 in 300,000 people may have homozygous FH, according to estimates. Patients with homozygous FH have two FH genes, one from each parent. In patients with homozygous FH, levels of LDL-C levels typically range between 400 and 1,000 mg/dL without treatment, which is four to 10 times higher than normal concentrations of the blood fat, according to the Family Heart Foundation.
“This study adds to a growing body of literature – including our own work – demonstrating that recommended universal screening occurs in barely 1 in 5 children. This means some patients are not being recognized as having treatable diseases,” said Justin H. Berger, MD, PhD, a pediatric cardiologist at Children’s Hospital of Philadelphia.
Even among children who are at the highest risk for early onset adult-type heart disease, only a quarter to two-thirds receive recommended screening, said Dr. Berger, who was not a member of the study team.
While Dr. Berger advocates universal lipid screening, improving screening rates in practice probably isn’t as simple as telling clinicians to screen more, he said. “Increasing testing will increase health care spending and the burden on busy primary care providers without addressing who will subsequently evaluate and manage children with abnormal lipid screening results,” Dr. Berger said.
Instead, clinicians may want to focus on screening patients who are at risk, which “could have dramatic benefits for their life-long cardiovascular health,” he said.
Dr. McGowan disclosed ties to Abbott and Regeneron, and her coauthors disclosed ties to Esperion Therapeutics and research funding from Regeneron and REGENXBIO. Dr. Berger disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.
FROM AAP 2022