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More Cases of Acute Diverticulitis Treated Outside Hospital
BOSTON — Patients with acute colonic diverticulitis are more likely to be seen by primary care providers than by emergency physicians, representing a shift in the way clinicians detect and treat the condition.
Acute colonic diverticulitis affects roughly 180 per 100,000 people per year in the United States.
CT of the abdomen and pelvis may not be a first-line method to detect diverticulitis in the primary care setting as it has been in emergent care, according to Kaveh Sharzehi, MD, MS, associate professor of medicine in the Division of Gastroenterology and Hepatology at Oregon Health & Science University in Portland.
Indeed, clinical guidelines by multiple physician groups recommend that providers use a more individualized approach to detecting and treating the condition.
“There is still great value in proper and thorough physical history and some adjunct testing,” Dr. Sharzehi told attendees during a presentation on April 20 at the American College of Physicians Internal Medicine Meeting 2024. These two methods can detect the disease up to 65% of the time, Dr. Sharzehi added.
An initial evaluation of a patient with suspected acute diverticulitis should first assess the patient’s history of abdominal pain, fever, and leukocytosis, Dr. Sharzehi said.
A C-reactive protein level > 50 mg/L “almost doubles the odds of having diverticulitis,” Dr. Sharzehi said. Studies also suggest increased levels of procalcitonin and fecal calprotectin can indicate the presence of the condition.
The American Gastroenterological Association (AGA) and the American College of Physicians recommend abdominal CT if clinicians are uncertain of the diagnosis, and to evaluate potential complications in severe cases. Ultrasound and MRI can be useful alternatives, according to guidelines from the American Society of Colon and Rectal Surgeons.
The chances of developing diverticulitis increase with age. More than 60% of Americans aged 60 years or older have diverticulosis, a condition characterized by small pouches in the colon lining that can weaken the colon wall. Less than 5% of people with diverticulosis go on to develop diverticulitis.
“Aspirin and opioid use are also risk factors, likely from their effect on the colonic transit time and causing constipation that might contribute to diverticulitis, but that›s not very well understood,” Dr. Sharzehi said.
Medical management has shifted from predominantly inpatient to predominantly outpatient care, Dr. Sharzehi told attendees
“Unfortunately, there are not that many supportive guidelines for what diet a patient should have in the acute setting of diverticulitis,” he said.
Patients with a mild case may benefit from a clear liquid diet; for some patients, high-fiber diets, regular physical activity, and statins may protect against recurrence.
Current guidelines recommend against prescribing antibiotics for most cases because evidence suggests that diverticulitis is primarily an inflammatory process that can result in small tears in the diverticulum, rather than the disease being a complication of existing tears.
Patients should also not be treated with probiotics or 5-aminosalicylic acid agents, Dr. Sharzehi said.
“My practice is in the Pacific Northwest, where there’s a lot of belief in naturopathic remedies, so we get a lot of questions about supplements and probiotics in preventing diverticulitis,” he said. “We don’t think it does help, and this is unanimous among all the main [physician] societies.”
The AGA recommends referring patients for a colonoscopy within a year after diverticulitis symptoms have resided.
Severe or unresolved cases could require inpatient procedures such as percutaneous drainage or surgery. An estimated 15%-30% of patients admitted to hospital with acute diverticulitis require surgery, Dr. Sharzehi said.
Surgery may become an option for patients who have recurrent cases of the disease, even if not severe, Dr. Sharzehi said.
Dr. Sharzehi reported no relevant disclosures.
A version of this article first appeared on Medscape.com.
BOSTON — Patients with acute colonic diverticulitis are more likely to be seen by primary care providers than by emergency physicians, representing a shift in the way clinicians detect and treat the condition.
Acute colonic diverticulitis affects roughly 180 per 100,000 people per year in the United States.
CT of the abdomen and pelvis may not be a first-line method to detect diverticulitis in the primary care setting as it has been in emergent care, according to Kaveh Sharzehi, MD, MS, associate professor of medicine in the Division of Gastroenterology and Hepatology at Oregon Health & Science University in Portland.
Indeed, clinical guidelines by multiple physician groups recommend that providers use a more individualized approach to detecting and treating the condition.
“There is still great value in proper and thorough physical history and some adjunct testing,” Dr. Sharzehi told attendees during a presentation on April 20 at the American College of Physicians Internal Medicine Meeting 2024. These two methods can detect the disease up to 65% of the time, Dr. Sharzehi added.
An initial evaluation of a patient with suspected acute diverticulitis should first assess the patient’s history of abdominal pain, fever, and leukocytosis, Dr. Sharzehi said.
A C-reactive protein level > 50 mg/L “almost doubles the odds of having diverticulitis,” Dr. Sharzehi said. Studies also suggest increased levels of procalcitonin and fecal calprotectin can indicate the presence of the condition.
The American Gastroenterological Association (AGA) and the American College of Physicians recommend abdominal CT if clinicians are uncertain of the diagnosis, and to evaluate potential complications in severe cases. Ultrasound and MRI can be useful alternatives, according to guidelines from the American Society of Colon and Rectal Surgeons.
The chances of developing diverticulitis increase with age. More than 60% of Americans aged 60 years or older have diverticulosis, a condition characterized by small pouches in the colon lining that can weaken the colon wall. Less than 5% of people with diverticulosis go on to develop diverticulitis.
“Aspirin and opioid use are also risk factors, likely from their effect on the colonic transit time and causing constipation that might contribute to diverticulitis, but that›s not very well understood,” Dr. Sharzehi said.
Medical management has shifted from predominantly inpatient to predominantly outpatient care, Dr. Sharzehi told attendees
“Unfortunately, there are not that many supportive guidelines for what diet a patient should have in the acute setting of diverticulitis,” he said.
Patients with a mild case may benefit from a clear liquid diet; for some patients, high-fiber diets, regular physical activity, and statins may protect against recurrence.
Current guidelines recommend against prescribing antibiotics for most cases because evidence suggests that diverticulitis is primarily an inflammatory process that can result in small tears in the diverticulum, rather than the disease being a complication of existing tears.
Patients should also not be treated with probiotics or 5-aminosalicylic acid agents, Dr. Sharzehi said.
“My practice is in the Pacific Northwest, where there’s a lot of belief in naturopathic remedies, so we get a lot of questions about supplements and probiotics in preventing diverticulitis,” he said. “We don’t think it does help, and this is unanimous among all the main [physician] societies.”
The AGA recommends referring patients for a colonoscopy within a year after diverticulitis symptoms have resided.
Severe or unresolved cases could require inpatient procedures such as percutaneous drainage or surgery. An estimated 15%-30% of patients admitted to hospital with acute diverticulitis require surgery, Dr. Sharzehi said.
Surgery may become an option for patients who have recurrent cases of the disease, even if not severe, Dr. Sharzehi said.
Dr. Sharzehi reported no relevant disclosures.
A version of this article first appeared on Medscape.com.
BOSTON — Patients with acute colonic diverticulitis are more likely to be seen by primary care providers than by emergency physicians, representing a shift in the way clinicians detect and treat the condition.
Acute colonic diverticulitis affects roughly 180 per 100,000 people per year in the United States.
CT of the abdomen and pelvis may not be a first-line method to detect diverticulitis in the primary care setting as it has been in emergent care, according to Kaveh Sharzehi, MD, MS, associate professor of medicine in the Division of Gastroenterology and Hepatology at Oregon Health & Science University in Portland.
Indeed, clinical guidelines by multiple physician groups recommend that providers use a more individualized approach to detecting and treating the condition.
“There is still great value in proper and thorough physical history and some adjunct testing,” Dr. Sharzehi told attendees during a presentation on April 20 at the American College of Physicians Internal Medicine Meeting 2024. These two methods can detect the disease up to 65% of the time, Dr. Sharzehi added.
An initial evaluation of a patient with suspected acute diverticulitis should first assess the patient’s history of abdominal pain, fever, and leukocytosis, Dr. Sharzehi said.
A C-reactive protein level > 50 mg/L “almost doubles the odds of having diverticulitis,” Dr. Sharzehi said. Studies also suggest increased levels of procalcitonin and fecal calprotectin can indicate the presence of the condition.
The American Gastroenterological Association (AGA) and the American College of Physicians recommend abdominal CT if clinicians are uncertain of the diagnosis, and to evaluate potential complications in severe cases. Ultrasound and MRI can be useful alternatives, according to guidelines from the American Society of Colon and Rectal Surgeons.
The chances of developing diverticulitis increase with age. More than 60% of Americans aged 60 years or older have diverticulosis, a condition characterized by small pouches in the colon lining that can weaken the colon wall. Less than 5% of people with diverticulosis go on to develop diverticulitis.
“Aspirin and opioid use are also risk factors, likely from their effect on the colonic transit time and causing constipation that might contribute to diverticulitis, but that›s not very well understood,” Dr. Sharzehi said.
Medical management has shifted from predominantly inpatient to predominantly outpatient care, Dr. Sharzehi told attendees
“Unfortunately, there are not that many supportive guidelines for what diet a patient should have in the acute setting of diverticulitis,” he said.
Patients with a mild case may benefit from a clear liquid diet; for some patients, high-fiber diets, regular physical activity, and statins may protect against recurrence.
Current guidelines recommend against prescribing antibiotics for most cases because evidence suggests that diverticulitis is primarily an inflammatory process that can result in small tears in the diverticulum, rather than the disease being a complication of existing tears.
Patients should also not be treated with probiotics or 5-aminosalicylic acid agents, Dr. Sharzehi said.
“My practice is in the Pacific Northwest, where there’s a lot of belief in naturopathic remedies, so we get a lot of questions about supplements and probiotics in preventing diverticulitis,” he said. “We don’t think it does help, and this is unanimous among all the main [physician] societies.”
The AGA recommends referring patients for a colonoscopy within a year after diverticulitis symptoms have resided.
Severe or unresolved cases could require inpatient procedures such as percutaneous drainage or surgery. An estimated 15%-30% of patients admitted to hospital with acute diverticulitis require surgery, Dr. Sharzehi said.
Surgery may become an option for patients who have recurrent cases of the disease, even if not severe, Dr. Sharzehi said.
Dr. Sharzehi reported no relevant disclosures.
A version of this article first appeared on Medscape.com.
Probiotics Emerge as Promising Intervention in Cirrhosis
, according to a systematic review and meta-analysis.
They also improve quality of life and have a favorable safety profile, adding to their potential as a promising intervention for treating cirrhosis, the study authors wrote.
“As currently one of the top 10 leading causes of death globally, cirrhosis imposes a great health burden in many countries,” wrote lead author Xing Yang of the Health Management Research Institute at the People’s Hospital of Guangxi Zhuang Autonomous Region and Guangxi Academy of Medical Sciences in Nanning, China, and colleagues.
“The burden has escalated at the worldwide level since 1990, partly because of population growth and aging,” the authors wrote. “Thus, it is meaningful to explore effective treatments for reversing cirrhosis and preventing severe liver function and even systemic damage.”
The study was published online in Frontiers in Medicine .
Analyzing Probiotic Trials
The researchers conducted a systematic review and meta-analysis of 30 randomized controlled trials among 2084 adults with cirrhosis, comparing the effects of probiotic intervention and control treatments, including placebo, no treatment, standard care, or active controls such as lactulose and rifaximin. The studies spanned 14 countries and included 1049 patients in the probiotic groups and 1035 in the control groups.
The research team calculated risk ratios (RRs) or standardized mean difference (SMD) for outcomes such as HE reversal, Model for End-Stage Liver Disease (MELD) scores, safety and tolerability of probiotics, liver function, and quality of life.
Among 17 studies involving patients with different stages of HE, as compared with the control group, probiotics significantly reversed minimal HE (RR, 1.54) and improved HE (RR, 1.94). In particular, the probiotic VSL#3 — which contains Streptococcus, Bifidobacterium, and Lactobacillus — produced more significant HE improvement (RR, 1.44) compared with other types of probiotics.
In addition, probiotics appeared to improve liver function by reducing MELD scores (SMD, −0.57) but didn’t show a difference in other liver function parameters. There were numerical but not significant reductions in mortality and serum inflammatory cytokine expression, including endotoxin, interleukin-6, and tumor necrosis factor-alpha.
Probiotics also improved quality-of-life scores (SMD, 0.51) and gut flora (SMD, 1.67). For gut flora, the numbers of the Lactobacillus group were significantly higher after probiotic treatment, but there wasn’t a significant difference for Bifidobacterium, Enterococcus, Bacteroidaceae, and Fusobacterium.
Finally, compared with control treatments, including placebo, standard therapy, and active controls such as lactulose and rifaximin, probiotics showed higher safety and tolerability profiles, causing a significantly lower incidence of serious adverse events (RR, 0.71).
Longer intervention times reduced the risk for overt HE development, hospitalization, and infections compared with shorter intervention times.
“Probiotics contribute to the reduction of ammonia levels and the improvement of neuropsychometric or neurophysiological status, leading to the reversal of HE associated with cirrhosis,” the study authors wrote. “Moreover, they induce favorable changes in gut flora and quality of life. Therefore, probiotics emerge as a promising intervention for reversing the onset of cirrhosis and preventing disease progression.”
Considering Variables
The authors noted several limitations, including a high or unclear risk for bias in 28 studies and the lack of data on the intervention effect for various types of probiotics or treatment durations.
“Overall, despite a number of methodological concerns, the study shows that probiotics can improve some disease markers in cirrhosis,” Phillipp Hartmann, MD, assistant professor of pediatric gastroenterology, hepatology, and nutrition at the University of California, San Diego, said in an interview.
“One of the methodological concerns is that the authors compared probiotics with a multitude of different treatments, including fiber and lactulose (which are both prebiotics), rifaximin (which is an antibiotic), standard of care, placebo, or no therapy,” he said. “This might contribute to the sometimes-contradictory findings between the different studies. The ideal comparison would be a specific probiotic formulation versus a placebo to understand what the probiotic actually does.”
Dr. Hartmann, who wasn’t involved with this study, has published a review on the potential of probiotics, prebiotics, and synbiotics in liver disease. He and colleagues noted the mechanisms that improve a disrupted intestinal barrier, microbial translocation, and altered gut microbiome metabolism.
“Over the last few years, we and others have studied the intestinal microbiota in various liver diseases, including alcohol-associated liver disease and metabolic dysfunction-associated steatotic liver disease,” he said. “Essentially, all studies support the notion that probiotics improve the microbial structure in the gut by increasing the beneficial and decreasing the potentially pathogenic microbes.”
However, probiotics and supplements are unregulated, Dr. Hartmann noted. Many different probiotic mixes and dosages have been tested in clinical trials, and additional studies are needed to determine the best formulations and dosages.
“Usually, the best outcomes can be achieved with a higher number of strains included in the probiotic formulation (10-30+) and a higher number of colony-forming units at 30-50+ billion per day,” he said.
The study was supported by funds from the Science and Technology Major Project of Guangxi, Guangxi Key Research and Development Program, and Natural Science Foundation of Guangxi Zhuang Autonomous Region. The authors declared no conflicts of interest. Dr. Hartmann reported no relevant disclosures.
A version of this article appeared on Medscape.com .
, according to a systematic review and meta-analysis.
They also improve quality of life and have a favorable safety profile, adding to their potential as a promising intervention for treating cirrhosis, the study authors wrote.
“As currently one of the top 10 leading causes of death globally, cirrhosis imposes a great health burden in many countries,” wrote lead author Xing Yang of the Health Management Research Institute at the People’s Hospital of Guangxi Zhuang Autonomous Region and Guangxi Academy of Medical Sciences in Nanning, China, and colleagues.
“The burden has escalated at the worldwide level since 1990, partly because of population growth and aging,” the authors wrote. “Thus, it is meaningful to explore effective treatments for reversing cirrhosis and preventing severe liver function and even systemic damage.”
The study was published online in Frontiers in Medicine .
Analyzing Probiotic Trials
The researchers conducted a systematic review and meta-analysis of 30 randomized controlled trials among 2084 adults with cirrhosis, comparing the effects of probiotic intervention and control treatments, including placebo, no treatment, standard care, or active controls such as lactulose and rifaximin. The studies spanned 14 countries and included 1049 patients in the probiotic groups and 1035 in the control groups.
The research team calculated risk ratios (RRs) or standardized mean difference (SMD) for outcomes such as HE reversal, Model for End-Stage Liver Disease (MELD) scores, safety and tolerability of probiotics, liver function, and quality of life.
Among 17 studies involving patients with different stages of HE, as compared with the control group, probiotics significantly reversed minimal HE (RR, 1.54) and improved HE (RR, 1.94). In particular, the probiotic VSL#3 — which contains Streptococcus, Bifidobacterium, and Lactobacillus — produced more significant HE improvement (RR, 1.44) compared with other types of probiotics.
In addition, probiotics appeared to improve liver function by reducing MELD scores (SMD, −0.57) but didn’t show a difference in other liver function parameters. There were numerical but not significant reductions in mortality and serum inflammatory cytokine expression, including endotoxin, interleukin-6, and tumor necrosis factor-alpha.
Probiotics also improved quality-of-life scores (SMD, 0.51) and gut flora (SMD, 1.67). For gut flora, the numbers of the Lactobacillus group were significantly higher after probiotic treatment, but there wasn’t a significant difference for Bifidobacterium, Enterococcus, Bacteroidaceae, and Fusobacterium.
Finally, compared with control treatments, including placebo, standard therapy, and active controls such as lactulose and rifaximin, probiotics showed higher safety and tolerability profiles, causing a significantly lower incidence of serious adverse events (RR, 0.71).
Longer intervention times reduced the risk for overt HE development, hospitalization, and infections compared with shorter intervention times.
“Probiotics contribute to the reduction of ammonia levels and the improvement of neuropsychometric or neurophysiological status, leading to the reversal of HE associated with cirrhosis,” the study authors wrote. “Moreover, they induce favorable changes in gut flora and quality of life. Therefore, probiotics emerge as a promising intervention for reversing the onset of cirrhosis and preventing disease progression.”
Considering Variables
The authors noted several limitations, including a high or unclear risk for bias in 28 studies and the lack of data on the intervention effect for various types of probiotics or treatment durations.
“Overall, despite a number of methodological concerns, the study shows that probiotics can improve some disease markers in cirrhosis,” Phillipp Hartmann, MD, assistant professor of pediatric gastroenterology, hepatology, and nutrition at the University of California, San Diego, said in an interview.
“One of the methodological concerns is that the authors compared probiotics with a multitude of different treatments, including fiber and lactulose (which are both prebiotics), rifaximin (which is an antibiotic), standard of care, placebo, or no therapy,” he said. “This might contribute to the sometimes-contradictory findings between the different studies. The ideal comparison would be a specific probiotic formulation versus a placebo to understand what the probiotic actually does.”
Dr. Hartmann, who wasn’t involved with this study, has published a review on the potential of probiotics, prebiotics, and synbiotics in liver disease. He and colleagues noted the mechanisms that improve a disrupted intestinal barrier, microbial translocation, and altered gut microbiome metabolism.
“Over the last few years, we and others have studied the intestinal microbiota in various liver diseases, including alcohol-associated liver disease and metabolic dysfunction-associated steatotic liver disease,” he said. “Essentially, all studies support the notion that probiotics improve the microbial structure in the gut by increasing the beneficial and decreasing the potentially pathogenic microbes.”
However, probiotics and supplements are unregulated, Dr. Hartmann noted. Many different probiotic mixes and dosages have been tested in clinical trials, and additional studies are needed to determine the best formulations and dosages.
“Usually, the best outcomes can be achieved with a higher number of strains included in the probiotic formulation (10-30+) and a higher number of colony-forming units at 30-50+ billion per day,” he said.
The study was supported by funds from the Science and Technology Major Project of Guangxi, Guangxi Key Research and Development Program, and Natural Science Foundation of Guangxi Zhuang Autonomous Region. The authors declared no conflicts of interest. Dr. Hartmann reported no relevant disclosures.
A version of this article appeared on Medscape.com .
, according to a systematic review and meta-analysis.
They also improve quality of life and have a favorable safety profile, adding to their potential as a promising intervention for treating cirrhosis, the study authors wrote.
“As currently one of the top 10 leading causes of death globally, cirrhosis imposes a great health burden in many countries,” wrote lead author Xing Yang of the Health Management Research Institute at the People’s Hospital of Guangxi Zhuang Autonomous Region and Guangxi Academy of Medical Sciences in Nanning, China, and colleagues.
“The burden has escalated at the worldwide level since 1990, partly because of population growth and aging,” the authors wrote. “Thus, it is meaningful to explore effective treatments for reversing cirrhosis and preventing severe liver function and even systemic damage.”
The study was published online in Frontiers in Medicine .
Analyzing Probiotic Trials
The researchers conducted a systematic review and meta-analysis of 30 randomized controlled trials among 2084 adults with cirrhosis, comparing the effects of probiotic intervention and control treatments, including placebo, no treatment, standard care, or active controls such as lactulose and rifaximin. The studies spanned 14 countries and included 1049 patients in the probiotic groups and 1035 in the control groups.
The research team calculated risk ratios (RRs) or standardized mean difference (SMD) for outcomes such as HE reversal, Model for End-Stage Liver Disease (MELD) scores, safety and tolerability of probiotics, liver function, and quality of life.
Among 17 studies involving patients with different stages of HE, as compared with the control group, probiotics significantly reversed minimal HE (RR, 1.54) and improved HE (RR, 1.94). In particular, the probiotic VSL#3 — which contains Streptococcus, Bifidobacterium, and Lactobacillus — produced more significant HE improvement (RR, 1.44) compared with other types of probiotics.
In addition, probiotics appeared to improve liver function by reducing MELD scores (SMD, −0.57) but didn’t show a difference in other liver function parameters. There were numerical but not significant reductions in mortality and serum inflammatory cytokine expression, including endotoxin, interleukin-6, and tumor necrosis factor-alpha.
Probiotics also improved quality-of-life scores (SMD, 0.51) and gut flora (SMD, 1.67). For gut flora, the numbers of the Lactobacillus group were significantly higher after probiotic treatment, but there wasn’t a significant difference for Bifidobacterium, Enterococcus, Bacteroidaceae, and Fusobacterium.
Finally, compared with control treatments, including placebo, standard therapy, and active controls such as lactulose and rifaximin, probiotics showed higher safety and tolerability profiles, causing a significantly lower incidence of serious adverse events (RR, 0.71).
Longer intervention times reduced the risk for overt HE development, hospitalization, and infections compared with shorter intervention times.
“Probiotics contribute to the reduction of ammonia levels and the improvement of neuropsychometric or neurophysiological status, leading to the reversal of HE associated with cirrhosis,” the study authors wrote. “Moreover, they induce favorable changes in gut flora and quality of life. Therefore, probiotics emerge as a promising intervention for reversing the onset of cirrhosis and preventing disease progression.”
Considering Variables
The authors noted several limitations, including a high or unclear risk for bias in 28 studies and the lack of data on the intervention effect for various types of probiotics or treatment durations.
“Overall, despite a number of methodological concerns, the study shows that probiotics can improve some disease markers in cirrhosis,” Phillipp Hartmann, MD, assistant professor of pediatric gastroenterology, hepatology, and nutrition at the University of California, San Diego, said in an interview.
“One of the methodological concerns is that the authors compared probiotics with a multitude of different treatments, including fiber and lactulose (which are both prebiotics), rifaximin (which is an antibiotic), standard of care, placebo, or no therapy,” he said. “This might contribute to the sometimes-contradictory findings between the different studies. The ideal comparison would be a specific probiotic formulation versus a placebo to understand what the probiotic actually does.”
Dr. Hartmann, who wasn’t involved with this study, has published a review on the potential of probiotics, prebiotics, and synbiotics in liver disease. He and colleagues noted the mechanisms that improve a disrupted intestinal barrier, microbial translocation, and altered gut microbiome metabolism.
“Over the last few years, we and others have studied the intestinal microbiota in various liver diseases, including alcohol-associated liver disease and metabolic dysfunction-associated steatotic liver disease,” he said. “Essentially, all studies support the notion that probiotics improve the microbial structure in the gut by increasing the beneficial and decreasing the potentially pathogenic microbes.”
However, probiotics and supplements are unregulated, Dr. Hartmann noted. Many different probiotic mixes and dosages have been tested in clinical trials, and additional studies are needed to determine the best formulations and dosages.
“Usually, the best outcomes can be achieved with a higher number of strains included in the probiotic formulation (10-30+) and a higher number of colony-forming units at 30-50+ billion per day,” he said.
The study was supported by funds from the Science and Technology Major Project of Guangxi, Guangxi Key Research and Development Program, and Natural Science Foundation of Guangxi Zhuang Autonomous Region. The authors declared no conflicts of interest. Dr. Hartmann reported no relevant disclosures.
A version of this article appeared on Medscape.com .
Are Direct-to-Consumer Microbiome Tests Clinically Useful?
Companies selling gut microbiome tests directly to consumers offer up a variety of claims to promote their products.
“We analyze the trillions of microbes in your gut microflora and craft a unique formula for your unique gut needs,” one says. “Get actionable dietary, supplement, and lifestyle recommendations from our microbiome experts based on your results, tailored to mom and baby’s biomarkers. ... Any family member like dads or siblings are welcome too,” says another.
The companies assert that they can improve gut health by offering individuals personalized treatments based on their gut microbiome test results. The trouble is, no provider, company, or technology can reliably do that yet.
Clinical Implications, Not Applications
The microbiome is the “constellation of microorganisms that call the human body home,” including many strains of bacteria, fungi, and viruses. That constellation comprises some 39 trillion cells.
Although knowledge is increasing on the oral, cutaneous, and vaginal microbiomes, the gut microbiome is arguably the most studied. However, while research is increasingly demonstrating that the gut microbiome has clinical implications, much work needs to be done before reliable applications based on that research are available.
But , Erik C. von Rosenvinge, MD, AGAF, a professor at the University of Maryland School of Medicine and chief of gastroenterology at the VA Maryland Health Care System, Baltimore, said in an interview.
“If you go to their websites, even if it’s not stated overtly, these companies at least give the impression that they’re providing actionable, useful information,” he said. “The sites recommend microbiome testing, and often supplements, probiotics, or other products that they sell. And consumers are told they need to be tested again once they start taking any of these products to see if they’re receiving any benefit.”
Dr. von Rosenvinge and colleagues authored a recent article in Science arguing that DTC microbiome tests “lack analytical and clinical validity” — and yet regulation of the industry has been “generally ignored.” They identified 31 companies globally, 17 of which are based in the United States, claiming to have products and/or services aimed at changing the intestinal microbiome.
Unreliable, Unregulated
The lack of reliability has been shown by experts who have tested the tests.
“People have taken the same stool sample, sent it to multiple companies, and gotten different results back,” Dr. von Rosenvinge said. “People also have taken a stool sample and sent it to the same company under two different names and received two different results. If the test is unreliable at its foundational level, it’s hard to use it in any clinical way.”
Test users’ methods and the companies’ procedures can affect the results, Dina Kao, MD, a professor at the University of Alberta, Edmonton, Alberta, Canada, said in an interview.
“So many biases can be introduced at every single step of the way, starting from how the stool sample was collected and how it’s preserved or not being preserved, because that can introduce a lot of noise that would change the analyses. Which primer they’re using to amplify the signals and which bioinformatic pipeline they use are also important,” said Dr. Kao, who presented at the recent Gut Microbiota for Health World Summit, organized by the American Gastroenterological Association (AGA) and the European Society of Neurogastroenterology and Motility (ESNM).
Different investigators and companies use different technologies, so it’s very difficult to compare them and to create a standard, said Mahmoud Ghannoum, PhD, a professor in the dermatology and pathology departments at Case Western Reserve University School of Medicine and director of the Center for Medical Mycology at University Hospitals in Cleveland.
The complexity of the gut microbiome makes test standardization more difficult than it is when just one organism is involved, Dr. Ghannoum, who chaired the antifungal subcommittee at the Clinical and Laboratory Standards Institute, said in an interview.
“Even though many researchers are focusing on bacteria, we also have fungi and viruses. We need standardization of methods for testing these organisms if we want to have regulations,” said Dr. Ghannoum, a cofounder of BIOHM, a microbiome company that offers nondiagnostic tests and markets a variety of probiotics, prebiotics, and immunity supplements. BIOHM is one of the 31 companies identified by Dr. von Rosenvinge and colleagues, as noted above.
Dr. Ghannoum believes that taking a systematic approach could facilitate standardization and, ultimately, regulation of the DTC microbiome testing products. He and his colleagues described such an approach by outlining the stages for designing probiotics capable of modulating the microbiome in chronic diseases, using Crohn’s disease as a model. Their strategy involved the following steps:
- Using primary microbiome data to identify, by abundance, the microorganisms underlying dysbiosis.
- Gaining insight into the interactions among the identified pathogens.
- Conducting a correlation analysis to identify potential lead probiotic strains that antagonize these pathogens and discovering metabolites that can interrupt their interactions.
- Creating a prototype formulation for testing.
- Validating the efficacy of the candidate formulation via preclinical in vitro and in vivo testing.
- Conducting clinical testing.
Dr. Ghannoum recommends that companies use a similar process “to provide evidence that what they are doing will be helpful, not only for them but also for the reputation of the whole industry.”
Potential Pitfalls
Whether test results from commercial companies are positioned as wellness aids or diagnostic tools, providing advice based on the results “is where the danger can really come in,” Dr. Kao said. “There is still so much we don’t know about which microbial signatures are associated with each condition.”
“Even when we have a solution, like the Crohn’s exclusion diet, a physician doesn’t know enough of the nuances to give advice to a patient,” she said. “That really should be done under the guidance of an expert dietitian. And if a company is selling probiotics, I personally feel that’s not ethical. I’m pretty sure there’s always going to be some kind of conflict of interest.”
Supplements and probiotics are generally safe, but negative consequences can occur, Dr. von Rosenvinge noted.
“We occasionally see people who end up with liver problems as a result of certain supplements, and rarely, probiotics have been associated with infections from those organisms, usually in those with a compromised immune system,” he said.
Other risks include people taking supplements or probiotics when they actually have a medically treatable condition or delays in diagnosis of a potentially serious underlying condition, such as colon cancer, he said. Some patients may stop taking their traditional medication in favor of taking supplements or may experience a drug-supplement interaction if they take both.
What to Tell Patients
“Doctors should be advising against this testing for their patients,” gastroenterologist Colleen R. Kelly, MD, AGAF, Brigham and Women’s Hospital, Boston, said in an interview. “I explain to patients that these tests are not validated and are clinically meaningless data and not worth the money. There is a reason they are not covered by insurance.
“Recommendations to purchase probiotics or supplements manufactured by the testing company to ‘restore a balanced or healthy microbiome’ clearly seem like a scam,” she added. “I believe some of these companies are capitalizing on patients who are desperate for answers to explain chronic symptoms, such as bloating in irritable bowel syndrome.”
Dr. von Rosenvinge said that the message to patients “is that the science isn’t there yet to support using the results of these tests in a meaningful way. We believe the microbiome is very important in health and disease, but the tests themselves in their current state are not as reliable and reproducible as we would like.”
When patients come in with test results, the first question a clinician should ask is what led them to seek out this type of information in the first place, Dr. von Rosenvinge said.
“Our patient focus groups suggested that many have not gotten clear, satisfactory answers from traditional medicine,” he said. “We don’t have a single test that says, yes, you have irritable bowel syndrome, or no, you don’t. We might suggest things that are helpful for some people and are less helpful for others.”
Dr. Kelly said she worries that “there are snake oil salesmen and cons out there who will gladly take your money. These may be smart people, capable of doing very high-level testing, and even producing very detailed and accurate results, but that doesn’t mean we know what to do with them.”
She hopes to see a microbiome-based diagnostic test in the future, particularly if the ability to therapeutically manipulate the gut microbiome in various diseases becomes a reality.
Educate Clinicians, Companies
More education is needed on the subject, so we can become “microbial clinicians,” Dr. Kao said.
“The microbiome never came up when I was going through my medical education,” she said. But we, and the next generation of physicians, “need to at least be able to understand the basics.
“Hopefully, one day, we will be in a position where we can have meaningful interpretations of the test results and make some kind of meaningful dietary interventions,” Dr. Kao added.
As for clinicians who are currently ordering these tests and products directly from the DTC companies, Dr. Kao said, “I roll my eyes.”
Dr. Ghannoum reiterated that companies offering microbiome tests and products also need to be educated and encouraged to use systematic approaches to product development and interpretation.
“Companies should be open to calls from clinicians and be ready to explain findings on a report, as well as the basis for any recommendations,” he said.
Dr. von Rosenvinge, Dr. Kao, and Dr. Kelly had no relevant conflicts of interest. Dr. Ghannoum is a cofounder of BIOHM.
A version of this article appeared on Medscape.com.
Companies selling gut microbiome tests directly to consumers offer up a variety of claims to promote their products.
“We analyze the trillions of microbes in your gut microflora and craft a unique formula for your unique gut needs,” one says. “Get actionable dietary, supplement, and lifestyle recommendations from our microbiome experts based on your results, tailored to mom and baby’s biomarkers. ... Any family member like dads or siblings are welcome too,” says another.
The companies assert that they can improve gut health by offering individuals personalized treatments based on their gut microbiome test results. The trouble is, no provider, company, or technology can reliably do that yet.
Clinical Implications, Not Applications
The microbiome is the “constellation of microorganisms that call the human body home,” including many strains of bacteria, fungi, and viruses. That constellation comprises some 39 trillion cells.
Although knowledge is increasing on the oral, cutaneous, and vaginal microbiomes, the gut microbiome is arguably the most studied. However, while research is increasingly demonstrating that the gut microbiome has clinical implications, much work needs to be done before reliable applications based on that research are available.
But , Erik C. von Rosenvinge, MD, AGAF, a professor at the University of Maryland School of Medicine and chief of gastroenterology at the VA Maryland Health Care System, Baltimore, said in an interview.
“If you go to their websites, even if it’s not stated overtly, these companies at least give the impression that they’re providing actionable, useful information,” he said. “The sites recommend microbiome testing, and often supplements, probiotics, or other products that they sell. And consumers are told they need to be tested again once they start taking any of these products to see if they’re receiving any benefit.”
Dr. von Rosenvinge and colleagues authored a recent article in Science arguing that DTC microbiome tests “lack analytical and clinical validity” — and yet regulation of the industry has been “generally ignored.” They identified 31 companies globally, 17 of which are based in the United States, claiming to have products and/or services aimed at changing the intestinal microbiome.
Unreliable, Unregulated
The lack of reliability has been shown by experts who have tested the tests.
“People have taken the same stool sample, sent it to multiple companies, and gotten different results back,” Dr. von Rosenvinge said. “People also have taken a stool sample and sent it to the same company under two different names and received two different results. If the test is unreliable at its foundational level, it’s hard to use it in any clinical way.”
Test users’ methods and the companies’ procedures can affect the results, Dina Kao, MD, a professor at the University of Alberta, Edmonton, Alberta, Canada, said in an interview.
“So many biases can be introduced at every single step of the way, starting from how the stool sample was collected and how it’s preserved or not being preserved, because that can introduce a lot of noise that would change the analyses. Which primer they’re using to amplify the signals and which bioinformatic pipeline they use are also important,” said Dr. Kao, who presented at the recent Gut Microbiota for Health World Summit, organized by the American Gastroenterological Association (AGA) and the European Society of Neurogastroenterology and Motility (ESNM).
Different investigators and companies use different technologies, so it’s very difficult to compare them and to create a standard, said Mahmoud Ghannoum, PhD, a professor in the dermatology and pathology departments at Case Western Reserve University School of Medicine and director of the Center for Medical Mycology at University Hospitals in Cleveland.
The complexity of the gut microbiome makes test standardization more difficult than it is when just one organism is involved, Dr. Ghannoum, who chaired the antifungal subcommittee at the Clinical and Laboratory Standards Institute, said in an interview.
“Even though many researchers are focusing on bacteria, we also have fungi and viruses. We need standardization of methods for testing these organisms if we want to have regulations,” said Dr. Ghannoum, a cofounder of BIOHM, a microbiome company that offers nondiagnostic tests and markets a variety of probiotics, prebiotics, and immunity supplements. BIOHM is one of the 31 companies identified by Dr. von Rosenvinge and colleagues, as noted above.
Dr. Ghannoum believes that taking a systematic approach could facilitate standardization and, ultimately, regulation of the DTC microbiome testing products. He and his colleagues described such an approach by outlining the stages for designing probiotics capable of modulating the microbiome in chronic diseases, using Crohn’s disease as a model. Their strategy involved the following steps:
- Using primary microbiome data to identify, by abundance, the microorganisms underlying dysbiosis.
- Gaining insight into the interactions among the identified pathogens.
- Conducting a correlation analysis to identify potential lead probiotic strains that antagonize these pathogens and discovering metabolites that can interrupt their interactions.
- Creating a prototype formulation for testing.
- Validating the efficacy of the candidate formulation via preclinical in vitro and in vivo testing.
- Conducting clinical testing.
Dr. Ghannoum recommends that companies use a similar process “to provide evidence that what they are doing will be helpful, not only for them but also for the reputation of the whole industry.”
Potential Pitfalls
Whether test results from commercial companies are positioned as wellness aids or diagnostic tools, providing advice based on the results “is where the danger can really come in,” Dr. Kao said. “There is still so much we don’t know about which microbial signatures are associated with each condition.”
“Even when we have a solution, like the Crohn’s exclusion diet, a physician doesn’t know enough of the nuances to give advice to a patient,” she said. “That really should be done under the guidance of an expert dietitian. And if a company is selling probiotics, I personally feel that’s not ethical. I’m pretty sure there’s always going to be some kind of conflict of interest.”
Supplements and probiotics are generally safe, but negative consequences can occur, Dr. von Rosenvinge noted.
“We occasionally see people who end up with liver problems as a result of certain supplements, and rarely, probiotics have been associated with infections from those organisms, usually in those with a compromised immune system,” he said.
Other risks include people taking supplements or probiotics when they actually have a medically treatable condition or delays in diagnosis of a potentially serious underlying condition, such as colon cancer, he said. Some patients may stop taking their traditional medication in favor of taking supplements or may experience a drug-supplement interaction if they take both.
What to Tell Patients
“Doctors should be advising against this testing for their patients,” gastroenterologist Colleen R. Kelly, MD, AGAF, Brigham and Women’s Hospital, Boston, said in an interview. “I explain to patients that these tests are not validated and are clinically meaningless data and not worth the money. There is a reason they are not covered by insurance.
“Recommendations to purchase probiotics or supplements manufactured by the testing company to ‘restore a balanced or healthy microbiome’ clearly seem like a scam,” she added. “I believe some of these companies are capitalizing on patients who are desperate for answers to explain chronic symptoms, such as bloating in irritable bowel syndrome.”
Dr. von Rosenvinge said that the message to patients “is that the science isn’t there yet to support using the results of these tests in a meaningful way. We believe the microbiome is very important in health and disease, but the tests themselves in their current state are not as reliable and reproducible as we would like.”
When patients come in with test results, the first question a clinician should ask is what led them to seek out this type of information in the first place, Dr. von Rosenvinge said.
“Our patient focus groups suggested that many have not gotten clear, satisfactory answers from traditional medicine,” he said. “We don’t have a single test that says, yes, you have irritable bowel syndrome, or no, you don’t. We might suggest things that are helpful for some people and are less helpful for others.”
Dr. Kelly said she worries that “there are snake oil salesmen and cons out there who will gladly take your money. These may be smart people, capable of doing very high-level testing, and even producing very detailed and accurate results, but that doesn’t mean we know what to do with them.”
She hopes to see a microbiome-based diagnostic test in the future, particularly if the ability to therapeutically manipulate the gut microbiome in various diseases becomes a reality.
Educate Clinicians, Companies
More education is needed on the subject, so we can become “microbial clinicians,” Dr. Kao said.
“The microbiome never came up when I was going through my medical education,” she said. But we, and the next generation of physicians, “need to at least be able to understand the basics.
“Hopefully, one day, we will be in a position where we can have meaningful interpretations of the test results and make some kind of meaningful dietary interventions,” Dr. Kao added.
As for clinicians who are currently ordering these tests and products directly from the DTC companies, Dr. Kao said, “I roll my eyes.”
Dr. Ghannoum reiterated that companies offering microbiome tests and products also need to be educated and encouraged to use systematic approaches to product development and interpretation.
“Companies should be open to calls from clinicians and be ready to explain findings on a report, as well as the basis for any recommendations,” he said.
Dr. von Rosenvinge, Dr. Kao, and Dr. Kelly had no relevant conflicts of interest. Dr. Ghannoum is a cofounder of BIOHM.
A version of this article appeared on Medscape.com.
Companies selling gut microbiome tests directly to consumers offer up a variety of claims to promote their products.
“We analyze the trillions of microbes in your gut microflora and craft a unique formula for your unique gut needs,” one says. “Get actionable dietary, supplement, and lifestyle recommendations from our microbiome experts based on your results, tailored to mom and baby’s biomarkers. ... Any family member like dads or siblings are welcome too,” says another.
The companies assert that they can improve gut health by offering individuals personalized treatments based on their gut microbiome test results. The trouble is, no provider, company, or technology can reliably do that yet.
Clinical Implications, Not Applications
The microbiome is the “constellation of microorganisms that call the human body home,” including many strains of bacteria, fungi, and viruses. That constellation comprises some 39 trillion cells.
Although knowledge is increasing on the oral, cutaneous, and vaginal microbiomes, the gut microbiome is arguably the most studied. However, while research is increasingly demonstrating that the gut microbiome has clinical implications, much work needs to be done before reliable applications based on that research are available.
But , Erik C. von Rosenvinge, MD, AGAF, a professor at the University of Maryland School of Medicine and chief of gastroenterology at the VA Maryland Health Care System, Baltimore, said in an interview.
“If you go to their websites, even if it’s not stated overtly, these companies at least give the impression that they’re providing actionable, useful information,” he said. “The sites recommend microbiome testing, and often supplements, probiotics, or other products that they sell. And consumers are told they need to be tested again once they start taking any of these products to see if they’re receiving any benefit.”
Dr. von Rosenvinge and colleagues authored a recent article in Science arguing that DTC microbiome tests “lack analytical and clinical validity” — and yet regulation of the industry has been “generally ignored.” They identified 31 companies globally, 17 of which are based in the United States, claiming to have products and/or services aimed at changing the intestinal microbiome.
Unreliable, Unregulated
The lack of reliability has been shown by experts who have tested the tests.
“People have taken the same stool sample, sent it to multiple companies, and gotten different results back,” Dr. von Rosenvinge said. “People also have taken a stool sample and sent it to the same company under two different names and received two different results. If the test is unreliable at its foundational level, it’s hard to use it in any clinical way.”
Test users’ methods and the companies’ procedures can affect the results, Dina Kao, MD, a professor at the University of Alberta, Edmonton, Alberta, Canada, said in an interview.
“So many biases can be introduced at every single step of the way, starting from how the stool sample was collected and how it’s preserved or not being preserved, because that can introduce a lot of noise that would change the analyses. Which primer they’re using to amplify the signals and which bioinformatic pipeline they use are also important,” said Dr. Kao, who presented at the recent Gut Microbiota for Health World Summit, organized by the American Gastroenterological Association (AGA) and the European Society of Neurogastroenterology and Motility (ESNM).
Different investigators and companies use different technologies, so it’s very difficult to compare them and to create a standard, said Mahmoud Ghannoum, PhD, a professor in the dermatology and pathology departments at Case Western Reserve University School of Medicine and director of the Center for Medical Mycology at University Hospitals in Cleveland.
The complexity of the gut microbiome makes test standardization more difficult than it is when just one organism is involved, Dr. Ghannoum, who chaired the antifungal subcommittee at the Clinical and Laboratory Standards Institute, said in an interview.
“Even though many researchers are focusing on bacteria, we also have fungi and viruses. We need standardization of methods for testing these organisms if we want to have regulations,” said Dr. Ghannoum, a cofounder of BIOHM, a microbiome company that offers nondiagnostic tests and markets a variety of probiotics, prebiotics, and immunity supplements. BIOHM is one of the 31 companies identified by Dr. von Rosenvinge and colleagues, as noted above.
Dr. Ghannoum believes that taking a systematic approach could facilitate standardization and, ultimately, regulation of the DTC microbiome testing products. He and his colleagues described such an approach by outlining the stages for designing probiotics capable of modulating the microbiome in chronic diseases, using Crohn’s disease as a model. Their strategy involved the following steps:
- Using primary microbiome data to identify, by abundance, the microorganisms underlying dysbiosis.
- Gaining insight into the interactions among the identified pathogens.
- Conducting a correlation analysis to identify potential lead probiotic strains that antagonize these pathogens and discovering metabolites that can interrupt their interactions.
- Creating a prototype formulation for testing.
- Validating the efficacy of the candidate formulation via preclinical in vitro and in vivo testing.
- Conducting clinical testing.
Dr. Ghannoum recommends that companies use a similar process “to provide evidence that what they are doing will be helpful, not only for them but also for the reputation of the whole industry.”
Potential Pitfalls
Whether test results from commercial companies are positioned as wellness aids or diagnostic tools, providing advice based on the results “is where the danger can really come in,” Dr. Kao said. “There is still so much we don’t know about which microbial signatures are associated with each condition.”
“Even when we have a solution, like the Crohn’s exclusion diet, a physician doesn’t know enough of the nuances to give advice to a patient,” she said. “That really should be done under the guidance of an expert dietitian. And if a company is selling probiotics, I personally feel that’s not ethical. I’m pretty sure there’s always going to be some kind of conflict of interest.”
Supplements and probiotics are generally safe, but negative consequences can occur, Dr. von Rosenvinge noted.
“We occasionally see people who end up with liver problems as a result of certain supplements, and rarely, probiotics have been associated with infections from those organisms, usually in those with a compromised immune system,” he said.
Other risks include people taking supplements or probiotics when they actually have a medically treatable condition or delays in diagnosis of a potentially serious underlying condition, such as colon cancer, he said. Some patients may stop taking their traditional medication in favor of taking supplements or may experience a drug-supplement interaction if they take both.
What to Tell Patients
“Doctors should be advising against this testing for their patients,” gastroenterologist Colleen R. Kelly, MD, AGAF, Brigham and Women’s Hospital, Boston, said in an interview. “I explain to patients that these tests are not validated and are clinically meaningless data and not worth the money. There is a reason they are not covered by insurance.
“Recommendations to purchase probiotics or supplements manufactured by the testing company to ‘restore a balanced or healthy microbiome’ clearly seem like a scam,” she added. “I believe some of these companies are capitalizing on patients who are desperate for answers to explain chronic symptoms, such as bloating in irritable bowel syndrome.”
Dr. von Rosenvinge said that the message to patients “is that the science isn’t there yet to support using the results of these tests in a meaningful way. We believe the microbiome is very important in health and disease, but the tests themselves in their current state are not as reliable and reproducible as we would like.”
When patients come in with test results, the first question a clinician should ask is what led them to seek out this type of information in the first place, Dr. von Rosenvinge said.
“Our patient focus groups suggested that many have not gotten clear, satisfactory answers from traditional medicine,” he said. “We don’t have a single test that says, yes, you have irritable bowel syndrome, or no, you don’t. We might suggest things that are helpful for some people and are less helpful for others.”
Dr. Kelly said she worries that “there are snake oil salesmen and cons out there who will gladly take your money. These may be smart people, capable of doing very high-level testing, and even producing very detailed and accurate results, but that doesn’t mean we know what to do with them.”
She hopes to see a microbiome-based diagnostic test in the future, particularly if the ability to therapeutically manipulate the gut microbiome in various diseases becomes a reality.
Educate Clinicians, Companies
More education is needed on the subject, so we can become “microbial clinicians,” Dr. Kao said.
“The microbiome never came up when I was going through my medical education,” she said. But we, and the next generation of physicians, “need to at least be able to understand the basics.
“Hopefully, one day, we will be in a position where we can have meaningful interpretations of the test results and make some kind of meaningful dietary interventions,” Dr. Kao added.
As for clinicians who are currently ordering these tests and products directly from the DTC companies, Dr. Kao said, “I roll my eyes.”
Dr. Ghannoum reiterated that companies offering microbiome tests and products also need to be educated and encouraged to use systematic approaches to product development and interpretation.
“Companies should be open to calls from clinicians and be ready to explain findings on a report, as well as the basis for any recommendations,” he said.
Dr. von Rosenvinge, Dr. Kao, and Dr. Kelly had no relevant conflicts of interest. Dr. Ghannoum is a cofounder of BIOHM.
A version of this article appeared on Medscape.com.
FDA OKs Subcutaneous Vedolizumab for Crohn’s Maintenance Therapy
The move follows the FDA’s approval last year of subcutaneous vedolizumab for maintenance treatment of adults with moderately to severely active ulcerative colitis (UC).
The humanized immunoglobulin G1 monoclonal antibody is available as a single-dose prefilled pen (Entyvio Pen).
The FDA first approved the IV formulation of the biologic in 2014 for patients with moderate to severe UC and CD who cannot tolerate other therapies or in whom such therapies have failed.
The approval of subcutaneous vedolizumab for maintenance treatment of CD is based on the phase 3, randomized, double-blind, placebo-controlled VISIBLE 2 trial.
The trial enrolled 409 adult patients with moderately to severely active CD who had clinical response at week 6 following two doses of open-label IV vedolizumab at weeks 0 and 2.
At week 6, they were randomly allocated in a 2:1 ratio to receive vedolizumab 108 mg administered by subcutaneous injection or placebo every 2 weeks. The primary endpoint was clinical remission at week 52, which was defined as a total Crohn’s Disease Activity Index score ≤ 150.
The results showed that significantly more patients receiving subcutaneous vedolizumab than placebo achieved long-term clinical remission (48% vs 34%; P < .01), the company said in a news release.
The safety profile of subcutaneous vedolizumab is generally consistent with the known safety profile of IV vedolizumab, with the addition of injection-site reactions (including injection-site erythema, rash, pruritus, swelling, bruising, hematoma, pain, urticaria, and edema).
“Crohn’s disease is a complex and usually progressive disease for which an appropriate management plan is critical. My primary goal as a clinician is always to get patients to achieve remission,” Timothy Ritter, MD, senior medical director, GI Alliance Research, and assistant professor of medicine, Burnett School of Medicine at TCU, Fort Worth, Texas, said in the news release.
“In VISIBLE 2, about half of patients treated with Entyvio SC achieved long-term clinical remission. The data from VISIBLE 2 reaffirm the well-established efficacy profile of Entyvio, regardless of route of administration,” Dr. Ritter added.
A version of this article appeared on Medscape.com.
The move follows the FDA’s approval last year of subcutaneous vedolizumab for maintenance treatment of adults with moderately to severely active ulcerative colitis (UC).
The humanized immunoglobulin G1 monoclonal antibody is available as a single-dose prefilled pen (Entyvio Pen).
The FDA first approved the IV formulation of the biologic in 2014 for patients with moderate to severe UC and CD who cannot tolerate other therapies or in whom such therapies have failed.
The approval of subcutaneous vedolizumab for maintenance treatment of CD is based on the phase 3, randomized, double-blind, placebo-controlled VISIBLE 2 trial.
The trial enrolled 409 adult patients with moderately to severely active CD who had clinical response at week 6 following two doses of open-label IV vedolizumab at weeks 0 and 2.
At week 6, they were randomly allocated in a 2:1 ratio to receive vedolizumab 108 mg administered by subcutaneous injection or placebo every 2 weeks. The primary endpoint was clinical remission at week 52, which was defined as a total Crohn’s Disease Activity Index score ≤ 150.
The results showed that significantly more patients receiving subcutaneous vedolizumab than placebo achieved long-term clinical remission (48% vs 34%; P < .01), the company said in a news release.
The safety profile of subcutaneous vedolizumab is generally consistent with the known safety profile of IV vedolizumab, with the addition of injection-site reactions (including injection-site erythema, rash, pruritus, swelling, bruising, hematoma, pain, urticaria, and edema).
“Crohn’s disease is a complex and usually progressive disease for which an appropriate management plan is critical. My primary goal as a clinician is always to get patients to achieve remission,” Timothy Ritter, MD, senior medical director, GI Alliance Research, and assistant professor of medicine, Burnett School of Medicine at TCU, Fort Worth, Texas, said in the news release.
“In VISIBLE 2, about half of patients treated with Entyvio SC achieved long-term clinical remission. The data from VISIBLE 2 reaffirm the well-established efficacy profile of Entyvio, regardless of route of administration,” Dr. Ritter added.
A version of this article appeared on Medscape.com.
The move follows the FDA’s approval last year of subcutaneous vedolizumab for maintenance treatment of adults with moderately to severely active ulcerative colitis (UC).
The humanized immunoglobulin G1 monoclonal antibody is available as a single-dose prefilled pen (Entyvio Pen).
The FDA first approved the IV formulation of the biologic in 2014 for patients with moderate to severe UC and CD who cannot tolerate other therapies or in whom such therapies have failed.
The approval of subcutaneous vedolizumab for maintenance treatment of CD is based on the phase 3, randomized, double-blind, placebo-controlled VISIBLE 2 trial.
The trial enrolled 409 adult patients with moderately to severely active CD who had clinical response at week 6 following two doses of open-label IV vedolizumab at weeks 0 and 2.
At week 6, they were randomly allocated in a 2:1 ratio to receive vedolizumab 108 mg administered by subcutaneous injection or placebo every 2 weeks. The primary endpoint was clinical remission at week 52, which was defined as a total Crohn’s Disease Activity Index score ≤ 150.
The results showed that significantly more patients receiving subcutaneous vedolizumab than placebo achieved long-term clinical remission (48% vs 34%; P < .01), the company said in a news release.
The safety profile of subcutaneous vedolizumab is generally consistent with the known safety profile of IV vedolizumab, with the addition of injection-site reactions (including injection-site erythema, rash, pruritus, swelling, bruising, hematoma, pain, urticaria, and edema).
“Crohn’s disease is a complex and usually progressive disease for which an appropriate management plan is critical. My primary goal as a clinician is always to get patients to achieve remission,” Timothy Ritter, MD, senior medical director, GI Alliance Research, and assistant professor of medicine, Burnett School of Medicine at TCU, Fort Worth, Texas, said in the news release.
“In VISIBLE 2, about half of patients treated with Entyvio SC achieved long-term clinical remission. The data from VISIBLE 2 reaffirm the well-established efficacy profile of Entyvio, regardless of route of administration,” Dr. Ritter added.
A version of this article appeared on Medscape.com.
Temporary Gut Liner Lowers Weight, A1c
LONDON — , showed data.
Two years after the liner’s removal, 80% of patients continued to show significant improvement, while 20% returned to baseline.
Presenting results at the Diabetes UK Professional Conference (DUKPC) 2024, the researchers, led by Bob Ryder, MD, FRCP, from the Department of Diabetes, Birmingham City Hospital, Birmingham, England, aimed to assess the safety and efficacy of EndoBarrier, as well as maintenance of efficacy 24 months after the device removal.
“We think EndoBarrier finds its place between the end of all the earlier measures and the possible option of bariatric surgery, and these data show that it can lead to tremendous weight loss and improvement in A1c,” Dr. Ryder said in an interview.
Commenting on how most patients had responded to use of the device, Dr. Ryder said, “People with obesity are often very unhappy and have tried everything over many years to no effect; however, this gut liner provided the opportunity to shift out of this state, and they often become so happy with the result they were determined to stick with it and continue with a healthier lifestyle including much more exercise.”
Convenient, Reversible Procedure
Ninety consecutive patients from Birmingham, all with longstanding, poorly controlled, type 2 diabetes and obesity, underwent the implantation procedure, and 60 of these attended follow-up visits 2 years post implantation.
Unlike permanent and more invasive weight loss surgeries, the EndoBarrier device is reversible and fitted with a straightforward procedure.
The thin impermeable sleeve is inserted via an approximate 1-hour endoscopy, enabling the patient to return home the same day. It lines the first 60 cm of the small intestine. Digested food passes through it without absorption and then makes contact with pancreatic and bile juices at the other end. This triggers a change in the metabolism of glucose and nutrients through modulating gut hormones and gut bacteria, as well as disrupting bile flow.
“Because the food bypasses the small intestine, the first time the food is encountered is in an area where it is not normally found, and this causes a reaction where signals are sent to the brain to stop eating,” explained Dr. Ryder.
Due to a license for 1 year of use, the gut liner was removed after a year via a 30-minute endoscopy procedure.
Over Half Maintained Full Improvement 2 Years Post Removal
A total of 60/90 (66%) attended follow-up visits and comprised the data presented. Mean age was 51.2 years, 47% were men, 50% were White, mean body mass index (BMI) was 41.5 kg/m2, and mean A1c was 9.3%. Duration of type 2 diabetes was a median of 11 years, and 60% were taking insulin.
Patients followed dietary requirements for the initial phase after implantation. “During the first week, they followed a liquid diet, then during week 2 — mushy food, and then they were told to chew it really well to avoid blockage,” said Dr. Ryder.
Mean weight loss on removal of the liner (at 12 months post implantation) was 16.7 kg (P < .001), while BMI dropped by mean 6 kg/m2, A1c dropped by a mean of 1.8%, and mean systolic blood pressure by 10.9 mm Hg.
Just over half (32/60, 53%) showed maintenance of fully sustained improvement 2 years after removal of the liner — defined as no significant difference after 2 years between weight loss (mean, 96-97 kg) and similarly for A1c improvement (7.6%-7.4%).
Sixteen of 60 (27%) showed partially sustained improvement over the 2 years of follow-up, with BMI increasing from a mean of 116.8 kg to 128.6 kg and A1c increasing from 7.5% to 8.4%. While 20% (12/60) returned to baseline.
Of the 36/60 people using insulin prior to EndoBarrier treatment, 10 (27.8%) were no longer using insulin at 2 years post removal.
Thirteen of 90 (14%) had early removal of the gut liner due to gastrointestinal hemorrhage (five), liver abscess (two), other abscess (one), and gastrointestinal symptoms (five), but they all made a full recovery; after removal, most experienced benefit despite the adverse event, reported Dr. Ryder.
Sarah Davies, MBBCh, a GP at Woodlands Medical Centre, Cardiff, Wales, agreed that EndoBarrier might be a viable option for patients struggling with obesity. “As GPs, we are the first port of call for these patients. It’s very novel, I hadn’t heard of it before. I like how it’s a noninvasive way for my patients to lose weight and maintain that even after EndoBarrier has been removed.”
Outcomes are being monitored in an ongoing global registry to help determine if EndoBarrier is a safe and effective treatment for individuals with type 2 diabetes and obesity. Dr. Ryder noted that a similar study with 3 years of follow-up showed similar results. Further results will be presented by Dr. Ryder at the upcoming meeting of the American Diabetes Association.
EndoBarrier is currently not approved in the United States. It is awaiting United Kingdom and European CE mark, which the manufacturer hope will be granted this summer. The license will be for patients with BMI of 35-50 kg/m2.
A version of this article appeared on Medscape.com.
LONDON — , showed data.
Two years after the liner’s removal, 80% of patients continued to show significant improvement, while 20% returned to baseline.
Presenting results at the Diabetes UK Professional Conference (DUKPC) 2024, the researchers, led by Bob Ryder, MD, FRCP, from the Department of Diabetes, Birmingham City Hospital, Birmingham, England, aimed to assess the safety and efficacy of EndoBarrier, as well as maintenance of efficacy 24 months after the device removal.
“We think EndoBarrier finds its place between the end of all the earlier measures and the possible option of bariatric surgery, and these data show that it can lead to tremendous weight loss and improvement in A1c,” Dr. Ryder said in an interview.
Commenting on how most patients had responded to use of the device, Dr. Ryder said, “People with obesity are often very unhappy and have tried everything over many years to no effect; however, this gut liner provided the opportunity to shift out of this state, and they often become so happy with the result they were determined to stick with it and continue with a healthier lifestyle including much more exercise.”
Convenient, Reversible Procedure
Ninety consecutive patients from Birmingham, all with longstanding, poorly controlled, type 2 diabetes and obesity, underwent the implantation procedure, and 60 of these attended follow-up visits 2 years post implantation.
Unlike permanent and more invasive weight loss surgeries, the EndoBarrier device is reversible and fitted with a straightforward procedure.
The thin impermeable sleeve is inserted via an approximate 1-hour endoscopy, enabling the patient to return home the same day. It lines the first 60 cm of the small intestine. Digested food passes through it without absorption and then makes contact with pancreatic and bile juices at the other end. This triggers a change in the metabolism of glucose and nutrients through modulating gut hormones and gut bacteria, as well as disrupting bile flow.
“Because the food bypasses the small intestine, the first time the food is encountered is in an area where it is not normally found, and this causes a reaction where signals are sent to the brain to stop eating,” explained Dr. Ryder.
Due to a license for 1 year of use, the gut liner was removed after a year via a 30-minute endoscopy procedure.
Over Half Maintained Full Improvement 2 Years Post Removal
A total of 60/90 (66%) attended follow-up visits and comprised the data presented. Mean age was 51.2 years, 47% were men, 50% were White, mean body mass index (BMI) was 41.5 kg/m2, and mean A1c was 9.3%. Duration of type 2 diabetes was a median of 11 years, and 60% were taking insulin.
Patients followed dietary requirements for the initial phase after implantation. “During the first week, they followed a liquid diet, then during week 2 — mushy food, and then they were told to chew it really well to avoid blockage,” said Dr. Ryder.
Mean weight loss on removal of the liner (at 12 months post implantation) was 16.7 kg (P < .001), while BMI dropped by mean 6 kg/m2, A1c dropped by a mean of 1.8%, and mean systolic blood pressure by 10.9 mm Hg.
Just over half (32/60, 53%) showed maintenance of fully sustained improvement 2 years after removal of the liner — defined as no significant difference after 2 years between weight loss (mean, 96-97 kg) and similarly for A1c improvement (7.6%-7.4%).
Sixteen of 60 (27%) showed partially sustained improvement over the 2 years of follow-up, with BMI increasing from a mean of 116.8 kg to 128.6 kg and A1c increasing from 7.5% to 8.4%. While 20% (12/60) returned to baseline.
Of the 36/60 people using insulin prior to EndoBarrier treatment, 10 (27.8%) were no longer using insulin at 2 years post removal.
Thirteen of 90 (14%) had early removal of the gut liner due to gastrointestinal hemorrhage (five), liver abscess (two), other abscess (one), and gastrointestinal symptoms (five), but they all made a full recovery; after removal, most experienced benefit despite the adverse event, reported Dr. Ryder.
Sarah Davies, MBBCh, a GP at Woodlands Medical Centre, Cardiff, Wales, agreed that EndoBarrier might be a viable option for patients struggling with obesity. “As GPs, we are the first port of call for these patients. It’s very novel, I hadn’t heard of it before. I like how it’s a noninvasive way for my patients to lose weight and maintain that even after EndoBarrier has been removed.”
Outcomes are being monitored in an ongoing global registry to help determine if EndoBarrier is a safe and effective treatment for individuals with type 2 diabetes and obesity. Dr. Ryder noted that a similar study with 3 years of follow-up showed similar results. Further results will be presented by Dr. Ryder at the upcoming meeting of the American Diabetes Association.
EndoBarrier is currently not approved in the United States. It is awaiting United Kingdom and European CE mark, which the manufacturer hope will be granted this summer. The license will be for patients with BMI of 35-50 kg/m2.
A version of this article appeared on Medscape.com.
LONDON — , showed data.
Two years after the liner’s removal, 80% of patients continued to show significant improvement, while 20% returned to baseline.
Presenting results at the Diabetes UK Professional Conference (DUKPC) 2024, the researchers, led by Bob Ryder, MD, FRCP, from the Department of Diabetes, Birmingham City Hospital, Birmingham, England, aimed to assess the safety and efficacy of EndoBarrier, as well as maintenance of efficacy 24 months after the device removal.
“We think EndoBarrier finds its place between the end of all the earlier measures and the possible option of bariatric surgery, and these data show that it can lead to tremendous weight loss and improvement in A1c,” Dr. Ryder said in an interview.
Commenting on how most patients had responded to use of the device, Dr. Ryder said, “People with obesity are often very unhappy and have tried everything over many years to no effect; however, this gut liner provided the opportunity to shift out of this state, and they often become so happy with the result they were determined to stick with it and continue with a healthier lifestyle including much more exercise.”
Convenient, Reversible Procedure
Ninety consecutive patients from Birmingham, all with longstanding, poorly controlled, type 2 diabetes and obesity, underwent the implantation procedure, and 60 of these attended follow-up visits 2 years post implantation.
Unlike permanent and more invasive weight loss surgeries, the EndoBarrier device is reversible and fitted with a straightforward procedure.
The thin impermeable sleeve is inserted via an approximate 1-hour endoscopy, enabling the patient to return home the same day. It lines the first 60 cm of the small intestine. Digested food passes through it without absorption and then makes contact with pancreatic and bile juices at the other end. This triggers a change in the metabolism of glucose and nutrients through modulating gut hormones and gut bacteria, as well as disrupting bile flow.
“Because the food bypasses the small intestine, the first time the food is encountered is in an area where it is not normally found, and this causes a reaction where signals are sent to the brain to stop eating,” explained Dr. Ryder.
Due to a license for 1 year of use, the gut liner was removed after a year via a 30-minute endoscopy procedure.
Over Half Maintained Full Improvement 2 Years Post Removal
A total of 60/90 (66%) attended follow-up visits and comprised the data presented. Mean age was 51.2 years, 47% were men, 50% were White, mean body mass index (BMI) was 41.5 kg/m2, and mean A1c was 9.3%. Duration of type 2 diabetes was a median of 11 years, and 60% were taking insulin.
Patients followed dietary requirements for the initial phase after implantation. “During the first week, they followed a liquid diet, then during week 2 — mushy food, and then they were told to chew it really well to avoid blockage,” said Dr. Ryder.
Mean weight loss on removal of the liner (at 12 months post implantation) was 16.7 kg (P < .001), while BMI dropped by mean 6 kg/m2, A1c dropped by a mean of 1.8%, and mean systolic blood pressure by 10.9 mm Hg.
Just over half (32/60, 53%) showed maintenance of fully sustained improvement 2 years after removal of the liner — defined as no significant difference after 2 years between weight loss (mean, 96-97 kg) and similarly for A1c improvement (7.6%-7.4%).
Sixteen of 60 (27%) showed partially sustained improvement over the 2 years of follow-up, with BMI increasing from a mean of 116.8 kg to 128.6 kg and A1c increasing from 7.5% to 8.4%. While 20% (12/60) returned to baseline.
Of the 36/60 people using insulin prior to EndoBarrier treatment, 10 (27.8%) were no longer using insulin at 2 years post removal.
Thirteen of 90 (14%) had early removal of the gut liner due to gastrointestinal hemorrhage (five), liver abscess (two), other abscess (one), and gastrointestinal symptoms (five), but they all made a full recovery; after removal, most experienced benefit despite the adverse event, reported Dr. Ryder.
Sarah Davies, MBBCh, a GP at Woodlands Medical Centre, Cardiff, Wales, agreed that EndoBarrier might be a viable option for patients struggling with obesity. “As GPs, we are the first port of call for these patients. It’s very novel, I hadn’t heard of it before. I like how it’s a noninvasive way for my patients to lose weight and maintain that even after EndoBarrier has been removed.”
Outcomes are being monitored in an ongoing global registry to help determine if EndoBarrier is a safe and effective treatment for individuals with type 2 diabetes and obesity. Dr. Ryder noted that a similar study with 3 years of follow-up showed similar results. Further results will be presented by Dr. Ryder at the upcoming meeting of the American Diabetes Association.
EndoBarrier is currently not approved in the United States. It is awaiting United Kingdom and European CE mark, which the manufacturer hope will be granted this summer. The license will be for patients with BMI of 35-50 kg/m2.
A version of this article appeared on Medscape.com.
Eliminating H pylori Lowers CRC Incidence, Mortality Risk
TOPLINE:
METHODOLOGY:
- H pylori is a known cause of peptic ulcers and stomach cancer and has been classified as a group I carcinogen by the World Health Organization›s International Agency for Research on Cancer.
- Studies showed that H pylori increases the risk for gastric cancer and may increase the risk for CRC, but evidence supporting the CRC connection remains inconsistent.
- To investigate a possible H pylori-CRC link, investigators reviewed CRC incidence and mortality in a nationwide cohort of 812,736 veterans tested for H pylori at Veterans Health Administration facilities; of the 205,178 (25.2%) who tested positive for H pylori, 134,417 (34%) were treated.
- Patients were followed from their first H pylori test, and researchers tracked subsequent CRC diagnoses as well as CRC-related and non-CRC–related deaths.
TAKEAWAY:
- H pylori infection was associated with an 18% higher risk for CRC (adjusted hazard ratio [aHR], 1.18) and a 12% higher risk for CRC mortality (aHR, 1.12).
- Untreated patients had a 23% higher risk for CRC (aHR, 1.23) and a 40% higher risk for CRC mortality (aHR, 1.40) than treated individuals.
- Over the 15-year follow-up, receiving treatment for H pylori infection vs no treatment was associated with a lower risk of developing and dying from CRC (absolute risk reduction, 0.23%-0.35%). For context, among individuals receiving a screening colonoscopy, the invasive test was associated with a 0.84%-1.22% absolute risk reduction in CRC incidence and a 0.15-0.30% absolute risk reduction in CRC mortality.
- Excluding patients diagnosed with CRC within a year of H pylori testing did not change the associations in the study.
IN PRACTICE:
“We would like to highlight the potentially exciting clinical implications of these findings,” the authors of an accompanying editorial wrote. “Although the mechanistic connection between H pylori and colorectal cancer is not fully resolved,” the finding that eliminating H pylori “could reduce both gastric and colorectal cancers is incredibly potent and should be considered in clinical care for individuals at high risk for GI [gastrointestinal] cancers.”
SOURCE:
The work, led by Shailja C. Shah, MD, of the University of California San Diego, was published in the Journal of Clinical Oncology, alongside the accompanying editorial by Julia Butt, PhD, of the German Cancer Research Center, Heidelberg, Germany, and Meira Epplein, PhD, of Duke University in Durham, North Carolina.
LIMITATIONS:
The study was limited to US veterans, which means generalizability to other populations needed to be confirmed. There may have been differences in CRC risk factors between treated and untreated patients.
DISCLOSURES:
The work was funded by the Veterans Health Administration, the National Cancer Institute, and others. Investigators reported ties to numerous companies, including AstraZeneca, Novartis, Guardant Health, and Medscape Medical News, publisher of this article. The editorialists had no disclosures.
A version of this article appeared on Medscape.com.
TOPLINE:
METHODOLOGY:
- H pylori is a known cause of peptic ulcers and stomach cancer and has been classified as a group I carcinogen by the World Health Organization›s International Agency for Research on Cancer.
- Studies showed that H pylori increases the risk for gastric cancer and may increase the risk for CRC, but evidence supporting the CRC connection remains inconsistent.
- To investigate a possible H pylori-CRC link, investigators reviewed CRC incidence and mortality in a nationwide cohort of 812,736 veterans tested for H pylori at Veterans Health Administration facilities; of the 205,178 (25.2%) who tested positive for H pylori, 134,417 (34%) were treated.
- Patients were followed from their first H pylori test, and researchers tracked subsequent CRC diagnoses as well as CRC-related and non-CRC–related deaths.
TAKEAWAY:
- H pylori infection was associated with an 18% higher risk for CRC (adjusted hazard ratio [aHR], 1.18) and a 12% higher risk for CRC mortality (aHR, 1.12).
- Untreated patients had a 23% higher risk for CRC (aHR, 1.23) and a 40% higher risk for CRC mortality (aHR, 1.40) than treated individuals.
- Over the 15-year follow-up, receiving treatment for H pylori infection vs no treatment was associated with a lower risk of developing and dying from CRC (absolute risk reduction, 0.23%-0.35%). For context, among individuals receiving a screening colonoscopy, the invasive test was associated with a 0.84%-1.22% absolute risk reduction in CRC incidence and a 0.15-0.30% absolute risk reduction in CRC mortality.
- Excluding patients diagnosed with CRC within a year of H pylori testing did not change the associations in the study.
IN PRACTICE:
“We would like to highlight the potentially exciting clinical implications of these findings,” the authors of an accompanying editorial wrote. “Although the mechanistic connection between H pylori and colorectal cancer is not fully resolved,” the finding that eliminating H pylori “could reduce both gastric and colorectal cancers is incredibly potent and should be considered in clinical care for individuals at high risk for GI [gastrointestinal] cancers.”
SOURCE:
The work, led by Shailja C. Shah, MD, of the University of California San Diego, was published in the Journal of Clinical Oncology, alongside the accompanying editorial by Julia Butt, PhD, of the German Cancer Research Center, Heidelberg, Germany, and Meira Epplein, PhD, of Duke University in Durham, North Carolina.
LIMITATIONS:
The study was limited to US veterans, which means generalizability to other populations needed to be confirmed. There may have been differences in CRC risk factors between treated and untreated patients.
DISCLOSURES:
The work was funded by the Veterans Health Administration, the National Cancer Institute, and others. Investigators reported ties to numerous companies, including AstraZeneca, Novartis, Guardant Health, and Medscape Medical News, publisher of this article. The editorialists had no disclosures.
A version of this article appeared on Medscape.com.
TOPLINE:
METHODOLOGY:
- H pylori is a known cause of peptic ulcers and stomach cancer and has been classified as a group I carcinogen by the World Health Organization›s International Agency for Research on Cancer.
- Studies showed that H pylori increases the risk for gastric cancer and may increase the risk for CRC, but evidence supporting the CRC connection remains inconsistent.
- To investigate a possible H pylori-CRC link, investigators reviewed CRC incidence and mortality in a nationwide cohort of 812,736 veterans tested for H pylori at Veterans Health Administration facilities; of the 205,178 (25.2%) who tested positive for H pylori, 134,417 (34%) were treated.
- Patients were followed from their first H pylori test, and researchers tracked subsequent CRC diagnoses as well as CRC-related and non-CRC–related deaths.
TAKEAWAY:
- H pylori infection was associated with an 18% higher risk for CRC (adjusted hazard ratio [aHR], 1.18) and a 12% higher risk for CRC mortality (aHR, 1.12).
- Untreated patients had a 23% higher risk for CRC (aHR, 1.23) and a 40% higher risk for CRC mortality (aHR, 1.40) than treated individuals.
- Over the 15-year follow-up, receiving treatment for H pylori infection vs no treatment was associated with a lower risk of developing and dying from CRC (absolute risk reduction, 0.23%-0.35%). For context, among individuals receiving a screening colonoscopy, the invasive test was associated with a 0.84%-1.22% absolute risk reduction in CRC incidence and a 0.15-0.30% absolute risk reduction in CRC mortality.
- Excluding patients diagnosed with CRC within a year of H pylori testing did not change the associations in the study.
IN PRACTICE:
“We would like to highlight the potentially exciting clinical implications of these findings,” the authors of an accompanying editorial wrote. “Although the mechanistic connection between H pylori and colorectal cancer is not fully resolved,” the finding that eliminating H pylori “could reduce both gastric and colorectal cancers is incredibly potent and should be considered in clinical care for individuals at high risk for GI [gastrointestinal] cancers.”
SOURCE:
The work, led by Shailja C. Shah, MD, of the University of California San Diego, was published in the Journal of Clinical Oncology, alongside the accompanying editorial by Julia Butt, PhD, of the German Cancer Research Center, Heidelberg, Germany, and Meira Epplein, PhD, of Duke University in Durham, North Carolina.
LIMITATIONS:
The study was limited to US veterans, which means generalizability to other populations needed to be confirmed. There may have been differences in CRC risk factors between treated and untreated patients.
DISCLOSURES:
The work was funded by the Veterans Health Administration, the National Cancer Institute, and others. Investigators reported ties to numerous companies, including AstraZeneca, Novartis, Guardant Health, and Medscape Medical News, publisher of this article. The editorialists had no disclosures.
A version of this article appeared on Medscape.com.
Erosive Esophagitis: 5 Things to Know
Erosive esophagitis (EE) is erosion of the esophageal epithelium due to chronic irritation. It can be caused by a number of factors but is primarily a result of gastroesophageal reflux disease (GERD). The main symptoms of EE are heartburn and regurgitation; other symptoms can include epigastric pain, odynophagia, dysphagia, nausea, chronic cough, dental erosion, laryngitis, and asthma. , including nonerosive esophagitis and Barrett esophagus (BE). EE occurs in approximately 30% of cases of GERD, and EE may evolve to BE in 1%-13% of cases.
Long-term management of EE focuses on relieving symptoms to allow the esophageal lining to heal, thereby reducing both acute symptoms and the risk for other complications. Management plans may incorporate lifestyle changes, such as dietary modifications and weight loss, alongside pharmacologic therapy. In extreme cases, surgery may be considered to repair a damaged esophagus and/or to prevent ongoing acid reflux. If left untreated, EE may progress, potentially leading to more serious conditions.
Here are five things to know about EE.
1. GERD is the main risk factor for EE, but not the only risk factor.
An estimated 1% of the population has EE. Risk factors other than GERD include:
Radiation therapy toxicity can cause acute or chronic EE. For individuals undergoing radiotherapy, radiation esophagitis is a relatively frequent complication. Acute esophagitis generally occurs in all patients taking radiation doses of 6000 cGy given in fractions of 1000 cGy per week. The risk is lower among patients on longer schedules and lower doses of radiotherapy.
Bacterial, viral, and fungal infections can cause EE. These include herpes, CMV, HIV, Helicobacter pylori, and Candida.
Food allergies, asthma, and eczema are associated with eosinophilic esophagitis, which disproportionately affects young men and has an estimated prevalence of 55 cases per 100,000 population.
Oral medication in pill form causes esophagitis at an estimated rate of 3.9 cases per 100,000 population per year. The mean age at diagnosis is 41.5 years. Oral bisphosphonates such as alendronate are the most common agents, along with antibiotics such as tetracycline, doxycycline, and clindamycin. There have also been reports of pill-induced esophagitis with NSAIDs, aspirin, ferrous sulfate, potassium chloride, and mexiletine.
Excessive vomiting can, in rare cases, cause esophagitis.
Certain autoimmune diseases can manifest as EE.
2. Proton pump inhibitors (PPIs) remain the preferred treatment for EE.
Several over-the-counter and prescription medications can be used to manage the symptoms of EE. PPIs are the preferred treatment both in the acute setting and for maintenance therapy. PPIs help to alleviate symptoms and promote healing of the esophageal lining by reducing the production of stomach acid. Options include omeprazole, lansoprazole, pantoprazole, rabeprazole, and esomeprazole. Many patients with EE require a dose that exceeds the FDA-approved dose for GERD. For instance, a 40-mg/d dosage of omeprazole is recommended in the latest guidelines, although the FDA-approved dosage is 20 mg/d.
H2-receptor antagonists, including famotidine, cimetidine, and nizatidine, may also be prescribed to reduce stomach acid production and promote healing in patients with EE due to GERD, but these agents are considered less efficacious than PPIs for either acute or maintenance therapy.
The potassium-competitive acid blocker (PCAB) vonoprazan is the latest agent to be indicated for EE and may provide more potent acid suppression for patients. A randomized comparative trial showed noninferiority compared with lansoprazole for healing and maintenance of healing of EE. In another randomized comparative study, the investigational PCAP fexuprazan was shown to be noninferior to the PPI esomeprazole in treating EE.
Mild GERD symptoms can be controlled by traditional antacids taken after each meal and at bedtime or with short-term use of prokinetic agents, which can help reduce acid reflux by improving esophageal and stomach motility and by increasing pressure to the lower esophageal sphincter. Gastric emptying is also accelerated by prokinetic agents. Long-term use is discouraged, as it may cause serious or life-threatening complications.
In patients who do not fully respond to PPI therapy, surgical therapy may be considered. Other candidates for surgery include younger patients, those who have difficulty adhering to treatment, postmenopausal women with osteoporosis, patients with cardiac conduction defects, and those for whom the cost of treatment is prohibitive. Surgery may also be warranted if there are extraesophageal manifestations of GERD, such as enamel erosion; respiratory issues (eg, coughing, wheezing, aspiration); or ear, nose, and throat manifestations (eg, hoarseness, sore throat, otitis media). For those who have progressed to BE, surgical intervention is also indicated.
The types of surgery for patients with EE have evolved to include both transthoracic and transabdominal fundoplication. Usually, a 360° transabdominal fundoplication is performed. General anesthesia is required for laparoscopic fundoplication, in which five small incisions are used to create a new valve at the level of the esophagogastric junction by wrapping the fundus of the stomach around the esophagus.
Laparoscopic insertion of a small band known as the LINX Reflux Management System is FDA approved to augment the lower esophageal sphincter. The system creates a natural barrier to reflux by placing a band consisting of titanium beads with magnetic cores around the esophagus just above the stomach. The magnetic bond is temporarily disrupted by swallowing, allowing food and liquid to pass.
Endoscopic therapies are another treatment option for certain patients who are not considered candidates for surgery or long-term therapy. Among the types of endoscopic procedures are radiofrequency therapy, suturing/plication, and mucosal ablation/resection techniques at the gastroesophageal junction. Full-thickness endoscopic suturing is an area of interest because this technique offers significant durability of the recreated lower esophageal sphincter.
3. PPI therapy for GERD should be stopped before endoscopy is performed to confirm a diagnosis of EE.
A clinical diagnosis of GERD can be made if the presenting symptoms are heartburn and regurgitation, without chest pain or alarm symptoms such as dysphagia, weight loss, or gastrointestinal bleeding. In this setting, once-daily PPIs are generally prescribed for 8 weeks to see if symptoms resolve. If symptoms have not resolved, a twice-daily PPI regimen may be prescribed. In patients who do not respond to PPIs, or for whom GERD returns after stopping therapy, an upper endoscopy with biopsy is recommended after 2-4 weeks off therapy to rule out other causes. Endoscopy should be the first step in diagnosis for individuals experiencing chest pain without heartburn; those in whom heart disease has been ruled out; individuals experiencing dysphagia, weight loss, or gastrointestinal bleeding; or those who have multiple risk factors for BE.
4. The most serious complication of EE is BE, which can lead to esophageal cancer.
Several complications can arise from EE. The most serious of these is BE, which can lead to esophageal adenocarcinoma. BE is characterized by the conversion of normal distal squamous esophageal epithelium to columnar epithelium. It has the potential to become malignant if it exhibits intestinal-type metaplasia. In the industrialized world, adenocarcinoma currently represents more than half of all esophageal cancers. The most common symptom of esophageal cancer is dysphagia. Other signs and symptoms include weight loss, hoarseness, chronic or intractable cough, bleeding, epigastric or retrosternal pain, frequent pneumonia, and, if metastatic, bone pain.
5. Lifestyle modifications can help control the symptoms of EE.
Guidelines recommend a number of lifestyle modification strategies to help control the symptoms of EE. Smoking cessation and weight loss are two evidence-based strategies for relieving symptoms of GERD and, ultimately, lowering the risk for esophageal cancer. One large prospective Norwegian cohort study (N = 29,610) found that stopping smoking improved GERD symptoms, but only in those with normal body mass index. In a smaller Japanese study (N = 191) specifically surveying people attempting smoking cessation, individuals who successfully stopped smoking had a 44% improvement in GERD symptoms at 1 year, vs an 18% improvement in those who continued to smoke, with no statistical difference between the success and failure groups based on patient body mass index (P = .60).
Other recommended strategies for nonpharmacologic management of EE symptoms include elevation of the head when lying down in bed and avoidance of lying down after eating, cessation of alcohol consumption, avoidance of food close to bedtime, and avoidance of trigger foods that can incite or worsen symptoms of acid reflux. Such trigger foods vary among individuals, but they often include fatty foods, coffee, chocolate, carbonated beverages, spicy foods, citrus fruits, and tomatoes.
Dr. Puerta has disclosed no relevant financial relationships.
A version of this article appeared on Medscape.com.
Erosive esophagitis (EE) is erosion of the esophageal epithelium due to chronic irritation. It can be caused by a number of factors but is primarily a result of gastroesophageal reflux disease (GERD). The main symptoms of EE are heartburn and regurgitation; other symptoms can include epigastric pain, odynophagia, dysphagia, nausea, chronic cough, dental erosion, laryngitis, and asthma. , including nonerosive esophagitis and Barrett esophagus (BE). EE occurs in approximately 30% of cases of GERD, and EE may evolve to BE in 1%-13% of cases.
Long-term management of EE focuses on relieving symptoms to allow the esophageal lining to heal, thereby reducing both acute symptoms and the risk for other complications. Management plans may incorporate lifestyle changes, such as dietary modifications and weight loss, alongside pharmacologic therapy. In extreme cases, surgery may be considered to repair a damaged esophagus and/or to prevent ongoing acid reflux. If left untreated, EE may progress, potentially leading to more serious conditions.
Here are five things to know about EE.
1. GERD is the main risk factor for EE, but not the only risk factor.
An estimated 1% of the population has EE. Risk factors other than GERD include:
Radiation therapy toxicity can cause acute or chronic EE. For individuals undergoing radiotherapy, radiation esophagitis is a relatively frequent complication. Acute esophagitis generally occurs in all patients taking radiation doses of 6000 cGy given in fractions of 1000 cGy per week. The risk is lower among patients on longer schedules and lower doses of radiotherapy.
Bacterial, viral, and fungal infections can cause EE. These include herpes, CMV, HIV, Helicobacter pylori, and Candida.
Food allergies, asthma, and eczema are associated with eosinophilic esophagitis, which disproportionately affects young men and has an estimated prevalence of 55 cases per 100,000 population.
Oral medication in pill form causes esophagitis at an estimated rate of 3.9 cases per 100,000 population per year. The mean age at diagnosis is 41.5 years. Oral bisphosphonates such as alendronate are the most common agents, along with antibiotics such as tetracycline, doxycycline, and clindamycin. There have also been reports of pill-induced esophagitis with NSAIDs, aspirin, ferrous sulfate, potassium chloride, and mexiletine.
Excessive vomiting can, in rare cases, cause esophagitis.
Certain autoimmune diseases can manifest as EE.
2. Proton pump inhibitors (PPIs) remain the preferred treatment for EE.
Several over-the-counter and prescription medications can be used to manage the symptoms of EE. PPIs are the preferred treatment both in the acute setting and for maintenance therapy. PPIs help to alleviate symptoms and promote healing of the esophageal lining by reducing the production of stomach acid. Options include omeprazole, lansoprazole, pantoprazole, rabeprazole, and esomeprazole. Many patients with EE require a dose that exceeds the FDA-approved dose for GERD. For instance, a 40-mg/d dosage of omeprazole is recommended in the latest guidelines, although the FDA-approved dosage is 20 mg/d.
H2-receptor antagonists, including famotidine, cimetidine, and nizatidine, may also be prescribed to reduce stomach acid production and promote healing in patients with EE due to GERD, but these agents are considered less efficacious than PPIs for either acute or maintenance therapy.
The potassium-competitive acid blocker (PCAB) vonoprazan is the latest agent to be indicated for EE and may provide more potent acid suppression for patients. A randomized comparative trial showed noninferiority compared with lansoprazole for healing and maintenance of healing of EE. In another randomized comparative study, the investigational PCAP fexuprazan was shown to be noninferior to the PPI esomeprazole in treating EE.
Mild GERD symptoms can be controlled by traditional antacids taken after each meal and at bedtime or with short-term use of prokinetic agents, which can help reduce acid reflux by improving esophageal and stomach motility and by increasing pressure to the lower esophageal sphincter. Gastric emptying is also accelerated by prokinetic agents. Long-term use is discouraged, as it may cause serious or life-threatening complications.
In patients who do not fully respond to PPI therapy, surgical therapy may be considered. Other candidates for surgery include younger patients, those who have difficulty adhering to treatment, postmenopausal women with osteoporosis, patients with cardiac conduction defects, and those for whom the cost of treatment is prohibitive. Surgery may also be warranted if there are extraesophageal manifestations of GERD, such as enamel erosion; respiratory issues (eg, coughing, wheezing, aspiration); or ear, nose, and throat manifestations (eg, hoarseness, sore throat, otitis media). For those who have progressed to BE, surgical intervention is also indicated.
The types of surgery for patients with EE have evolved to include both transthoracic and transabdominal fundoplication. Usually, a 360° transabdominal fundoplication is performed. General anesthesia is required for laparoscopic fundoplication, in which five small incisions are used to create a new valve at the level of the esophagogastric junction by wrapping the fundus of the stomach around the esophagus.
Laparoscopic insertion of a small band known as the LINX Reflux Management System is FDA approved to augment the lower esophageal sphincter. The system creates a natural barrier to reflux by placing a band consisting of titanium beads with magnetic cores around the esophagus just above the stomach. The magnetic bond is temporarily disrupted by swallowing, allowing food and liquid to pass.
Endoscopic therapies are another treatment option for certain patients who are not considered candidates for surgery or long-term therapy. Among the types of endoscopic procedures are radiofrequency therapy, suturing/plication, and mucosal ablation/resection techniques at the gastroesophageal junction. Full-thickness endoscopic suturing is an area of interest because this technique offers significant durability of the recreated lower esophageal sphincter.
3. PPI therapy for GERD should be stopped before endoscopy is performed to confirm a diagnosis of EE.
A clinical diagnosis of GERD can be made if the presenting symptoms are heartburn and regurgitation, without chest pain or alarm symptoms such as dysphagia, weight loss, or gastrointestinal bleeding. In this setting, once-daily PPIs are generally prescribed for 8 weeks to see if symptoms resolve. If symptoms have not resolved, a twice-daily PPI regimen may be prescribed. In patients who do not respond to PPIs, or for whom GERD returns after stopping therapy, an upper endoscopy with biopsy is recommended after 2-4 weeks off therapy to rule out other causes. Endoscopy should be the first step in diagnosis for individuals experiencing chest pain without heartburn; those in whom heart disease has been ruled out; individuals experiencing dysphagia, weight loss, or gastrointestinal bleeding; or those who have multiple risk factors for BE.
4. The most serious complication of EE is BE, which can lead to esophageal cancer.
Several complications can arise from EE. The most serious of these is BE, which can lead to esophageal adenocarcinoma. BE is characterized by the conversion of normal distal squamous esophageal epithelium to columnar epithelium. It has the potential to become malignant if it exhibits intestinal-type metaplasia. In the industrialized world, adenocarcinoma currently represents more than half of all esophageal cancers. The most common symptom of esophageal cancer is dysphagia. Other signs and symptoms include weight loss, hoarseness, chronic or intractable cough, bleeding, epigastric or retrosternal pain, frequent pneumonia, and, if metastatic, bone pain.
5. Lifestyle modifications can help control the symptoms of EE.
Guidelines recommend a number of lifestyle modification strategies to help control the symptoms of EE. Smoking cessation and weight loss are two evidence-based strategies for relieving symptoms of GERD and, ultimately, lowering the risk for esophageal cancer. One large prospective Norwegian cohort study (N = 29,610) found that stopping smoking improved GERD symptoms, but only in those with normal body mass index. In a smaller Japanese study (N = 191) specifically surveying people attempting smoking cessation, individuals who successfully stopped smoking had a 44% improvement in GERD symptoms at 1 year, vs an 18% improvement in those who continued to smoke, with no statistical difference between the success and failure groups based on patient body mass index (P = .60).
Other recommended strategies for nonpharmacologic management of EE symptoms include elevation of the head when lying down in bed and avoidance of lying down after eating, cessation of alcohol consumption, avoidance of food close to bedtime, and avoidance of trigger foods that can incite or worsen symptoms of acid reflux. Such trigger foods vary among individuals, but they often include fatty foods, coffee, chocolate, carbonated beverages, spicy foods, citrus fruits, and tomatoes.
Dr. Puerta has disclosed no relevant financial relationships.
A version of this article appeared on Medscape.com.
Erosive esophagitis (EE) is erosion of the esophageal epithelium due to chronic irritation. It can be caused by a number of factors but is primarily a result of gastroesophageal reflux disease (GERD). The main symptoms of EE are heartburn and regurgitation; other symptoms can include epigastric pain, odynophagia, dysphagia, nausea, chronic cough, dental erosion, laryngitis, and asthma. , including nonerosive esophagitis and Barrett esophagus (BE). EE occurs in approximately 30% of cases of GERD, and EE may evolve to BE in 1%-13% of cases.
Long-term management of EE focuses on relieving symptoms to allow the esophageal lining to heal, thereby reducing both acute symptoms and the risk for other complications. Management plans may incorporate lifestyle changes, such as dietary modifications and weight loss, alongside pharmacologic therapy. In extreme cases, surgery may be considered to repair a damaged esophagus and/or to prevent ongoing acid reflux. If left untreated, EE may progress, potentially leading to more serious conditions.
Here are five things to know about EE.
1. GERD is the main risk factor for EE, but not the only risk factor.
An estimated 1% of the population has EE. Risk factors other than GERD include:
Radiation therapy toxicity can cause acute or chronic EE. For individuals undergoing radiotherapy, radiation esophagitis is a relatively frequent complication. Acute esophagitis generally occurs in all patients taking radiation doses of 6000 cGy given in fractions of 1000 cGy per week. The risk is lower among patients on longer schedules and lower doses of radiotherapy.
Bacterial, viral, and fungal infections can cause EE. These include herpes, CMV, HIV, Helicobacter pylori, and Candida.
Food allergies, asthma, and eczema are associated with eosinophilic esophagitis, which disproportionately affects young men and has an estimated prevalence of 55 cases per 100,000 population.
Oral medication in pill form causes esophagitis at an estimated rate of 3.9 cases per 100,000 population per year. The mean age at diagnosis is 41.5 years. Oral bisphosphonates such as alendronate are the most common agents, along with antibiotics such as tetracycline, doxycycline, and clindamycin. There have also been reports of pill-induced esophagitis with NSAIDs, aspirin, ferrous sulfate, potassium chloride, and mexiletine.
Excessive vomiting can, in rare cases, cause esophagitis.
Certain autoimmune diseases can manifest as EE.
2. Proton pump inhibitors (PPIs) remain the preferred treatment for EE.
Several over-the-counter and prescription medications can be used to manage the symptoms of EE. PPIs are the preferred treatment both in the acute setting and for maintenance therapy. PPIs help to alleviate symptoms and promote healing of the esophageal lining by reducing the production of stomach acid. Options include omeprazole, lansoprazole, pantoprazole, rabeprazole, and esomeprazole. Many patients with EE require a dose that exceeds the FDA-approved dose for GERD. For instance, a 40-mg/d dosage of omeprazole is recommended in the latest guidelines, although the FDA-approved dosage is 20 mg/d.
H2-receptor antagonists, including famotidine, cimetidine, and nizatidine, may also be prescribed to reduce stomach acid production and promote healing in patients with EE due to GERD, but these agents are considered less efficacious than PPIs for either acute or maintenance therapy.
The potassium-competitive acid blocker (PCAB) vonoprazan is the latest agent to be indicated for EE and may provide more potent acid suppression for patients. A randomized comparative trial showed noninferiority compared with lansoprazole for healing and maintenance of healing of EE. In another randomized comparative study, the investigational PCAP fexuprazan was shown to be noninferior to the PPI esomeprazole in treating EE.
Mild GERD symptoms can be controlled by traditional antacids taken after each meal and at bedtime or with short-term use of prokinetic agents, which can help reduce acid reflux by improving esophageal and stomach motility and by increasing pressure to the lower esophageal sphincter. Gastric emptying is also accelerated by prokinetic agents. Long-term use is discouraged, as it may cause serious or life-threatening complications.
In patients who do not fully respond to PPI therapy, surgical therapy may be considered. Other candidates for surgery include younger patients, those who have difficulty adhering to treatment, postmenopausal women with osteoporosis, patients with cardiac conduction defects, and those for whom the cost of treatment is prohibitive. Surgery may also be warranted if there are extraesophageal manifestations of GERD, such as enamel erosion; respiratory issues (eg, coughing, wheezing, aspiration); or ear, nose, and throat manifestations (eg, hoarseness, sore throat, otitis media). For those who have progressed to BE, surgical intervention is also indicated.
The types of surgery for patients with EE have evolved to include both transthoracic and transabdominal fundoplication. Usually, a 360° transabdominal fundoplication is performed. General anesthesia is required for laparoscopic fundoplication, in which five small incisions are used to create a new valve at the level of the esophagogastric junction by wrapping the fundus of the stomach around the esophagus.
Laparoscopic insertion of a small band known as the LINX Reflux Management System is FDA approved to augment the lower esophageal sphincter. The system creates a natural barrier to reflux by placing a band consisting of titanium beads with magnetic cores around the esophagus just above the stomach. The magnetic bond is temporarily disrupted by swallowing, allowing food and liquid to pass.
Endoscopic therapies are another treatment option for certain patients who are not considered candidates for surgery or long-term therapy. Among the types of endoscopic procedures are radiofrequency therapy, suturing/plication, and mucosal ablation/resection techniques at the gastroesophageal junction. Full-thickness endoscopic suturing is an area of interest because this technique offers significant durability of the recreated lower esophageal sphincter.
3. PPI therapy for GERD should be stopped before endoscopy is performed to confirm a diagnosis of EE.
A clinical diagnosis of GERD can be made if the presenting symptoms are heartburn and regurgitation, without chest pain or alarm symptoms such as dysphagia, weight loss, or gastrointestinal bleeding. In this setting, once-daily PPIs are generally prescribed for 8 weeks to see if symptoms resolve. If symptoms have not resolved, a twice-daily PPI regimen may be prescribed. In patients who do not respond to PPIs, or for whom GERD returns after stopping therapy, an upper endoscopy with biopsy is recommended after 2-4 weeks off therapy to rule out other causes. Endoscopy should be the first step in diagnosis for individuals experiencing chest pain without heartburn; those in whom heart disease has been ruled out; individuals experiencing dysphagia, weight loss, or gastrointestinal bleeding; or those who have multiple risk factors for BE.
4. The most serious complication of EE is BE, which can lead to esophageal cancer.
Several complications can arise from EE. The most serious of these is BE, which can lead to esophageal adenocarcinoma. BE is characterized by the conversion of normal distal squamous esophageal epithelium to columnar epithelium. It has the potential to become malignant if it exhibits intestinal-type metaplasia. In the industrialized world, adenocarcinoma currently represents more than half of all esophageal cancers. The most common symptom of esophageal cancer is dysphagia. Other signs and symptoms include weight loss, hoarseness, chronic or intractable cough, bleeding, epigastric or retrosternal pain, frequent pneumonia, and, if metastatic, bone pain.
5. Lifestyle modifications can help control the symptoms of EE.
Guidelines recommend a number of lifestyle modification strategies to help control the symptoms of EE. Smoking cessation and weight loss are two evidence-based strategies for relieving symptoms of GERD and, ultimately, lowering the risk for esophageal cancer. One large prospective Norwegian cohort study (N = 29,610) found that stopping smoking improved GERD symptoms, but only in those with normal body mass index. In a smaller Japanese study (N = 191) specifically surveying people attempting smoking cessation, individuals who successfully stopped smoking had a 44% improvement in GERD symptoms at 1 year, vs an 18% improvement in those who continued to smoke, with no statistical difference between the success and failure groups based on patient body mass index (P = .60).
Other recommended strategies for nonpharmacologic management of EE symptoms include elevation of the head when lying down in bed and avoidance of lying down after eating, cessation of alcohol consumption, avoidance of food close to bedtime, and avoidance of trigger foods that can incite or worsen symptoms of acid reflux. Such trigger foods vary among individuals, but they often include fatty foods, coffee, chocolate, carbonated beverages, spicy foods, citrus fruits, and tomatoes.
Dr. Puerta has disclosed no relevant financial relationships.
A version of this article appeared on Medscape.com.
High-Fiber Gut Microbe Makeover Aids Weight Loss
TOPLINE:
A fiber supplement also found in beans and other foods may lead to weight loss and improved insulin sensitivity in people with excess body weight, partly due to changes in the gut microbiota.
METHODOLOGY:
- In animal studies, resistant starch (RS), a kind of dietary fiber, has shown a potential to reduce body fat along with other metabolic benefits, but human dietary studies of RS have been inconsistent, especially with a high-fat diet.
- Researchers conducted a crossover, randomized trial to study the effect of RS as a dietary supplement on 37 individuals with overweight or obesity (average age, 33.43 years; 15 women; body mass index > 24 or higher waist circumference).
- Participants were fed a similar background diet and either 40 g of RS (high-amylose maize) or an energy-matched placebo starch daily for 8 weeks and then switched between the two in a separate 8-week period.
- The primary outcome was body weight, and the secondary outcomes were visceral and subcutaneous fat mass, waist circumference, lipid profiles, insulin sensitivity, metabolome, and gut microbiome.
- RS’s impact on gut microbiota composition and function was assessed with metagenomics and metabolomics, and RS-modified gut microbiota’s effect on host body fat and glucose was confirmed by transferring from select average participants to mice.
TAKEAWAY:
- Participants showed a mean weight loss of 2.8 kg after consuming RS for 8 weeks (P < .001), but there was no significant change in body weight in those on placebo starch.
- RS improved insulin sensitivity in people to a greater extent than placebo starch (P = .025) and showed a greater reduction in fat mass, waist circumference, and other obesity-related outcomes.
- The abundance in the gut of the microbe Bifidobacterium adolescentis increased significantly following RS intervention, an increase that exhibited a strong correlation with decreased BMI, suggesting a role of RS in reducing obesity.
- The levels of pro-inflammatory cytokines, such as serum tumor necrosis factor-alpha and interleukin-1 beta, were significantly lower in participants who consumed RS than in those who had placebo starch.
IN PRACTICE:
“Our study provided an effective dietary recommendation using RS as a supplement (40 g/d with a balanced background diet containing 25%-30% fat), which may help to achieve significant weight loss,” the authors wrote.
SOURCE:
This study was led and corresponded by Huating Li, Shanghai Clinical Center for Diabetes, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China, and University of Hong Kong, Pok Fu Lam, and published online in Nature Metabolism.
LIMITATIONS:
This study was limited by the small sample size and stringent inclusion criteria for participants. The use of database-driven and taxane-based methodology might have led to difficult-to-classify sequences being discarded and strain-level functional diversity being overlooked. The authors also acknowledged the need to validate the findings of this study in larger and more diverse cohorts.
DISCLOSURES:
This work was supported by the National Key Research and Development Program of China, Shanghai Municipal Key Clinical Specialty, National Natural Science Foundation of China, and other sources. The authors declared no conflicts of interest.
A version of this article appeared on Medscape.com.
TOPLINE:
A fiber supplement also found in beans and other foods may lead to weight loss and improved insulin sensitivity in people with excess body weight, partly due to changes in the gut microbiota.
METHODOLOGY:
- In animal studies, resistant starch (RS), a kind of dietary fiber, has shown a potential to reduce body fat along with other metabolic benefits, but human dietary studies of RS have been inconsistent, especially with a high-fat diet.
- Researchers conducted a crossover, randomized trial to study the effect of RS as a dietary supplement on 37 individuals with overweight or obesity (average age, 33.43 years; 15 women; body mass index > 24 or higher waist circumference).
- Participants were fed a similar background diet and either 40 g of RS (high-amylose maize) or an energy-matched placebo starch daily for 8 weeks and then switched between the two in a separate 8-week period.
- The primary outcome was body weight, and the secondary outcomes were visceral and subcutaneous fat mass, waist circumference, lipid profiles, insulin sensitivity, metabolome, and gut microbiome.
- RS’s impact on gut microbiota composition and function was assessed with metagenomics and metabolomics, and RS-modified gut microbiota’s effect on host body fat and glucose was confirmed by transferring from select average participants to mice.
TAKEAWAY:
- Participants showed a mean weight loss of 2.8 kg after consuming RS for 8 weeks (P < .001), but there was no significant change in body weight in those on placebo starch.
- RS improved insulin sensitivity in people to a greater extent than placebo starch (P = .025) and showed a greater reduction in fat mass, waist circumference, and other obesity-related outcomes.
- The abundance in the gut of the microbe Bifidobacterium adolescentis increased significantly following RS intervention, an increase that exhibited a strong correlation with decreased BMI, suggesting a role of RS in reducing obesity.
- The levels of pro-inflammatory cytokines, such as serum tumor necrosis factor-alpha and interleukin-1 beta, were significantly lower in participants who consumed RS than in those who had placebo starch.
IN PRACTICE:
“Our study provided an effective dietary recommendation using RS as a supplement (40 g/d with a balanced background diet containing 25%-30% fat), which may help to achieve significant weight loss,” the authors wrote.
SOURCE:
This study was led and corresponded by Huating Li, Shanghai Clinical Center for Diabetes, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China, and University of Hong Kong, Pok Fu Lam, and published online in Nature Metabolism.
LIMITATIONS:
This study was limited by the small sample size and stringent inclusion criteria for participants. The use of database-driven and taxane-based methodology might have led to difficult-to-classify sequences being discarded and strain-level functional diversity being overlooked. The authors also acknowledged the need to validate the findings of this study in larger and more diverse cohorts.
DISCLOSURES:
This work was supported by the National Key Research and Development Program of China, Shanghai Municipal Key Clinical Specialty, National Natural Science Foundation of China, and other sources. The authors declared no conflicts of interest.
A version of this article appeared on Medscape.com.
TOPLINE:
A fiber supplement also found in beans and other foods may lead to weight loss and improved insulin sensitivity in people with excess body weight, partly due to changes in the gut microbiota.
METHODOLOGY:
- In animal studies, resistant starch (RS), a kind of dietary fiber, has shown a potential to reduce body fat along with other metabolic benefits, but human dietary studies of RS have been inconsistent, especially with a high-fat diet.
- Researchers conducted a crossover, randomized trial to study the effect of RS as a dietary supplement on 37 individuals with overweight or obesity (average age, 33.43 years; 15 women; body mass index > 24 or higher waist circumference).
- Participants were fed a similar background diet and either 40 g of RS (high-amylose maize) or an energy-matched placebo starch daily for 8 weeks and then switched between the two in a separate 8-week period.
- The primary outcome was body weight, and the secondary outcomes were visceral and subcutaneous fat mass, waist circumference, lipid profiles, insulin sensitivity, metabolome, and gut microbiome.
- RS’s impact on gut microbiota composition and function was assessed with metagenomics and metabolomics, and RS-modified gut microbiota’s effect on host body fat and glucose was confirmed by transferring from select average participants to mice.
TAKEAWAY:
- Participants showed a mean weight loss of 2.8 kg after consuming RS for 8 weeks (P < .001), but there was no significant change in body weight in those on placebo starch.
- RS improved insulin sensitivity in people to a greater extent than placebo starch (P = .025) and showed a greater reduction in fat mass, waist circumference, and other obesity-related outcomes.
- The abundance in the gut of the microbe Bifidobacterium adolescentis increased significantly following RS intervention, an increase that exhibited a strong correlation with decreased BMI, suggesting a role of RS in reducing obesity.
- The levels of pro-inflammatory cytokines, such as serum tumor necrosis factor-alpha and interleukin-1 beta, were significantly lower in participants who consumed RS than in those who had placebo starch.
IN PRACTICE:
“Our study provided an effective dietary recommendation using RS as a supplement (40 g/d with a balanced background diet containing 25%-30% fat), which may help to achieve significant weight loss,” the authors wrote.
SOURCE:
This study was led and corresponded by Huating Li, Shanghai Clinical Center for Diabetes, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China, and University of Hong Kong, Pok Fu Lam, and published online in Nature Metabolism.
LIMITATIONS:
This study was limited by the small sample size and stringent inclusion criteria for participants. The use of database-driven and taxane-based methodology might have led to difficult-to-classify sequences being discarded and strain-level functional diversity being overlooked. The authors also acknowledged the need to validate the findings of this study in larger and more diverse cohorts.
DISCLOSURES:
This work was supported by the National Key Research and Development Program of China, Shanghai Municipal Key Clinical Specialty, National Natural Science Foundation of China, and other sources. The authors declared no conflicts of interest.
A version of this article appeared on Medscape.com.
Study: Healthy Plant-Based Diets Do Not Raise Hip Fracture Risk
Long-term adherence to a plant-based diet was not tied to a greater risk of hip fracture and some plant-based regimens may actually reduce the risk, a large cohort study of postmenopausal women in the United States suggested.
Not all plant-centered regimens are healthful, however, and this study factored dietary quality into risk.
Writing in JAMA Network Open, the study authors compared the lowest to highest quintiles of Plant-Based Diet Index scores. They found the most recent intake of a healthy plant-based diet (hPDI) to be associated with a somewhat lower (21%) risk of fracture while the most recent intake of its unhealthy counterpart (uPDI) was linked to a somewhat higher (28%) risk.
“In addition, higher baseline scores in the uPDI were associated with higher risk of hip fracture,” wrote the researchers, led by Mercedes Sotos Prieto, PhD, a nutritional epidemiologist in the Department of Preventive Medicine and Public Health at the Autonomous University of Madrid.
Plant-based diets, characterized by higher consumption of plant foods and lower or no intake of animal foods, have raised concerns about their potential harm to bone health. In a recent meta-analysis, vegetarians, but particularly vegans with no consumption of any animal food, had a higher fracture risk and lower bone mineral density compared with omnivores.
Another study found that compared with meat eaters, fish eaters and vegetarians had a higher risk of hip fractures. These analyses, however, did not assess the quality of the plant-based diets.
“We hypothesized that the differences in the quality of the plant-based diets — whole grains, fruits, and vegetables vs refined carbohydrates or snacks, which are both plant-based but very different, would be important in the association for the risk of hip fracture,” Dr. Sotos Prieto said in an interview.
Study details
Her study drew on data from 70,285 postmenopausal White women who were in the US Nurses’ Health Study from 1984 through 2014; data were analyzed from Jan. 1 to July 31, 2023.
The mean age of the nurses was 54.92 years, and 2038 cases of hip fracture were reported during the study over as long as 30 years of follow-up.
Healthy plant foods included whole grains, fruits, vegetables, nuts, legumes, vegetable oils, and tea or coffee and received positive scores, whereas less healthy plant foods such as fruit juices, sweetened beverages, refined grains, potatoes, sweets, or desserts and animal foods received reversed scores. Dietary and lifestyle information was collected by self-reported questionnaires.
Individuals with higher hPDI scores were leaner, more physically active, less likely to be smokers, and more likely to use vitamin and calcium supplements. Not surprisingly, they also had higher intakes of dietary calcium and healthy plant foods and had lower intake of less healthy plant foods. “It’s plausible that reverse causation may account for the risk associations, as individuals with underlying health conditions that predisposed them to higher fracture risk may have changed their diet,” Dr. Sotos Prieto said. “In addition, baseline diet may reflect diet early on, which could be an important predictor of bone mineral density when there was more active bone turnover.”
Lack of information precluded adjustment for the use of anti-osteoporotic medication.
Neither the hPDI, with a hazard ratio (HR) for highest vs lowest quintile of 0.97 (95% confidence interval, 0.83-1.14) nor the uPDI, with an HR for highest vs lowest quintile of 1.02 (95% CI, 0.87-1.20) for diet adherence over the long term was associated with hip fracture risk.
For recent dietary intake in the highest vs lowest quintiles, however, the hPDI was associated with a 21% lower risk of hip fracture: HR, 0.79 (95% CI, 0.68-0.92; P = .02 for trend). In contrast, the uPDI was associated with a 28% higher risk: HR, 1.28 (95% CI, 1.09-1.51; P = .008 for trend).
Future studies in other populations are needed to confirm the results and enhance their generalizability, Dr. Sotos Prieto said. “Investigating the temporal dynamics of dietary patterns and their effects by examining how recent dietary changes may impact health outcomes over different timeframes is important.” In the meantime, people wishing to follow a plant-based diet should make sure it features high-quality foods.
This work was supported by Instituto de Salud Carlos III, State Secretary of Research, Development and Innovation of Spain, and the European Research Funds and European Social Fund, the Agencia Estatal de Investigación, the National Institutes of Health, and a Ramón y Cajal contract from the Ministry of Science, Innovation, and Universities. A coauthor reported a patent pending. No other disclosures were reported.
Long-term adherence to a plant-based diet was not tied to a greater risk of hip fracture and some plant-based regimens may actually reduce the risk, a large cohort study of postmenopausal women in the United States suggested.
Not all plant-centered regimens are healthful, however, and this study factored dietary quality into risk.
Writing in JAMA Network Open, the study authors compared the lowest to highest quintiles of Plant-Based Diet Index scores. They found the most recent intake of a healthy plant-based diet (hPDI) to be associated with a somewhat lower (21%) risk of fracture while the most recent intake of its unhealthy counterpart (uPDI) was linked to a somewhat higher (28%) risk.
“In addition, higher baseline scores in the uPDI were associated with higher risk of hip fracture,” wrote the researchers, led by Mercedes Sotos Prieto, PhD, a nutritional epidemiologist in the Department of Preventive Medicine and Public Health at the Autonomous University of Madrid.
Plant-based diets, characterized by higher consumption of plant foods and lower or no intake of animal foods, have raised concerns about their potential harm to bone health. In a recent meta-analysis, vegetarians, but particularly vegans with no consumption of any animal food, had a higher fracture risk and lower bone mineral density compared with omnivores.
Another study found that compared with meat eaters, fish eaters and vegetarians had a higher risk of hip fractures. These analyses, however, did not assess the quality of the plant-based diets.
“We hypothesized that the differences in the quality of the plant-based diets — whole grains, fruits, and vegetables vs refined carbohydrates or snacks, which are both plant-based but very different, would be important in the association for the risk of hip fracture,” Dr. Sotos Prieto said in an interview.
Study details
Her study drew on data from 70,285 postmenopausal White women who were in the US Nurses’ Health Study from 1984 through 2014; data were analyzed from Jan. 1 to July 31, 2023.
The mean age of the nurses was 54.92 years, and 2038 cases of hip fracture were reported during the study over as long as 30 years of follow-up.
Healthy plant foods included whole grains, fruits, vegetables, nuts, legumes, vegetable oils, and tea or coffee and received positive scores, whereas less healthy plant foods such as fruit juices, sweetened beverages, refined grains, potatoes, sweets, or desserts and animal foods received reversed scores. Dietary and lifestyle information was collected by self-reported questionnaires.
Individuals with higher hPDI scores were leaner, more physically active, less likely to be smokers, and more likely to use vitamin and calcium supplements. Not surprisingly, they also had higher intakes of dietary calcium and healthy plant foods and had lower intake of less healthy plant foods. “It’s plausible that reverse causation may account for the risk associations, as individuals with underlying health conditions that predisposed them to higher fracture risk may have changed their diet,” Dr. Sotos Prieto said. “In addition, baseline diet may reflect diet early on, which could be an important predictor of bone mineral density when there was more active bone turnover.”
Lack of information precluded adjustment for the use of anti-osteoporotic medication.
Neither the hPDI, with a hazard ratio (HR) for highest vs lowest quintile of 0.97 (95% confidence interval, 0.83-1.14) nor the uPDI, with an HR for highest vs lowest quintile of 1.02 (95% CI, 0.87-1.20) for diet adherence over the long term was associated with hip fracture risk.
For recent dietary intake in the highest vs lowest quintiles, however, the hPDI was associated with a 21% lower risk of hip fracture: HR, 0.79 (95% CI, 0.68-0.92; P = .02 for trend). In contrast, the uPDI was associated with a 28% higher risk: HR, 1.28 (95% CI, 1.09-1.51; P = .008 for trend).
Future studies in other populations are needed to confirm the results and enhance their generalizability, Dr. Sotos Prieto said. “Investigating the temporal dynamics of dietary patterns and their effects by examining how recent dietary changes may impact health outcomes over different timeframes is important.” In the meantime, people wishing to follow a plant-based diet should make sure it features high-quality foods.
This work was supported by Instituto de Salud Carlos III, State Secretary of Research, Development and Innovation of Spain, and the European Research Funds and European Social Fund, the Agencia Estatal de Investigación, the National Institutes of Health, and a Ramón y Cajal contract from the Ministry of Science, Innovation, and Universities. A coauthor reported a patent pending. No other disclosures were reported.
Long-term adherence to a plant-based diet was not tied to a greater risk of hip fracture and some plant-based regimens may actually reduce the risk, a large cohort study of postmenopausal women in the United States suggested.
Not all plant-centered regimens are healthful, however, and this study factored dietary quality into risk.
Writing in JAMA Network Open, the study authors compared the lowest to highest quintiles of Plant-Based Diet Index scores. They found the most recent intake of a healthy plant-based diet (hPDI) to be associated with a somewhat lower (21%) risk of fracture while the most recent intake of its unhealthy counterpart (uPDI) was linked to a somewhat higher (28%) risk.
“In addition, higher baseline scores in the uPDI were associated with higher risk of hip fracture,” wrote the researchers, led by Mercedes Sotos Prieto, PhD, a nutritional epidemiologist in the Department of Preventive Medicine and Public Health at the Autonomous University of Madrid.
Plant-based diets, characterized by higher consumption of plant foods and lower or no intake of animal foods, have raised concerns about their potential harm to bone health. In a recent meta-analysis, vegetarians, but particularly vegans with no consumption of any animal food, had a higher fracture risk and lower bone mineral density compared with omnivores.
Another study found that compared with meat eaters, fish eaters and vegetarians had a higher risk of hip fractures. These analyses, however, did not assess the quality of the plant-based diets.
“We hypothesized that the differences in the quality of the plant-based diets — whole grains, fruits, and vegetables vs refined carbohydrates or snacks, which are both plant-based but very different, would be important in the association for the risk of hip fracture,” Dr. Sotos Prieto said in an interview.
Study details
Her study drew on data from 70,285 postmenopausal White women who were in the US Nurses’ Health Study from 1984 through 2014; data were analyzed from Jan. 1 to July 31, 2023.
The mean age of the nurses was 54.92 years, and 2038 cases of hip fracture were reported during the study over as long as 30 years of follow-up.
Healthy plant foods included whole grains, fruits, vegetables, nuts, legumes, vegetable oils, and tea or coffee and received positive scores, whereas less healthy plant foods such as fruit juices, sweetened beverages, refined grains, potatoes, sweets, or desserts and animal foods received reversed scores. Dietary and lifestyle information was collected by self-reported questionnaires.
Individuals with higher hPDI scores were leaner, more physically active, less likely to be smokers, and more likely to use vitamin and calcium supplements. Not surprisingly, they also had higher intakes of dietary calcium and healthy plant foods and had lower intake of less healthy plant foods. “It’s plausible that reverse causation may account for the risk associations, as individuals with underlying health conditions that predisposed them to higher fracture risk may have changed their diet,” Dr. Sotos Prieto said. “In addition, baseline diet may reflect diet early on, which could be an important predictor of bone mineral density when there was more active bone turnover.”
Lack of information precluded adjustment for the use of anti-osteoporotic medication.
Neither the hPDI, with a hazard ratio (HR) for highest vs lowest quintile of 0.97 (95% confidence interval, 0.83-1.14) nor the uPDI, with an HR for highest vs lowest quintile of 1.02 (95% CI, 0.87-1.20) for diet adherence over the long term was associated with hip fracture risk.
For recent dietary intake in the highest vs lowest quintiles, however, the hPDI was associated with a 21% lower risk of hip fracture: HR, 0.79 (95% CI, 0.68-0.92; P = .02 for trend). In contrast, the uPDI was associated with a 28% higher risk: HR, 1.28 (95% CI, 1.09-1.51; P = .008 for trend).
Future studies in other populations are needed to confirm the results and enhance their generalizability, Dr. Sotos Prieto said. “Investigating the temporal dynamics of dietary patterns and their effects by examining how recent dietary changes may impact health outcomes over different timeframes is important.” In the meantime, people wishing to follow a plant-based diet should make sure it features high-quality foods.
This work was supported by Instituto de Salud Carlos III, State Secretary of Research, Development and Innovation of Spain, and the European Research Funds and European Social Fund, the Agencia Estatal de Investigación, the National Institutes of Health, and a Ramón y Cajal contract from the Ministry of Science, Innovation, and Universities. A coauthor reported a patent pending. No other disclosures were reported.
FROM JAMA NETWORK OPEN
Maternal Vegan Diet May Be Tied To Lower Birth Weight
Mothers on vegan diets during pregnancy may give birth to infants with lower mean birth weights than those of omnivorous mothers and may also have a greater risk of preeclampsia, a prospective study of Danish pregnant women suggests.
According to researchers led by Signe Hedegaard, MD, of the department of obstetrics and Gynecology at Rigshospitalet, Juliane Marie Center, University of Copenhagen, low protein intake may lie behind the observed association with birth weight. The report was published in Acta Obstetricia et Gynecologica Scandinavica.
While vegan-identifying mothers were very few in number, the authors conceded, their babies were more likely to weigh less on average than those of omnivorous mothers — 3441 g vs 3601 g — despite a mean gestation 5 days longer.
Prevalence rates of low birth weight (< 2500 g) in the two groups were 11.1% and 2.5%, respectively, and the prevalence of preeclampsia was 11.1% vs 2.6%. The mean birth weight of infants in the maternal vegan group was about 240 g lower than infants born to omnivorous mothers.
“The lower birth weight of around 240 g among vegans compared with omnivorous mothers in our study strengthens our observation that vegans may be at higher risk of giving birth to low-birth-weight infants. The observed effect size on birth weight is comparable to what is observed among daily smokers relative to nonsmokers in this cohort,“ Dr. Hedegaard and colleagues wrote. “Furthermore, the on-average 5-day longer gestation observed among vegans in our study would be indicative of reduced fetal growth rate rather than lower birth weight due to shorter gestation.”
These findings emerged from data on 66,738 pregnancies in the Danish National Birth Cohort, 1996-2002. A food frequency questionnaire characterized pregnant subjects as fish/poultry-vegetarians, lacto/ovo-vegetarians, vegans, or omnivores, based on their self-reporting in gestational week 30.
A total of 98.7% (n = 65,872) of participants were defined as omnivorous, while 1.0% (n = 666), 0.3% (n = 183), and 0.03% (n = 18) identified as fish/poultry vegetarians, lacto/ovo-vegetarians, or vegans, respectively.
Those following plant-based diets of all types were slightly older, more often parous, and less likely to smoke. This plant dietary group also had a somewhat lower prevalence of overweight and obesity (prepregnancy body mass index > 25 [kg/m2]) and a higher prevalence of underweight (prepregnancy BMI < 18.5).
Total energy intake was modestly lower from plant-based diets, for a mean difference of 0.3-0.7 MJ (72-167 kcal) per day.
As for total protein intake, this was substantially lower for lacto/ovo-vegetarians and vegans: 13.3% and 10.4% of energy, respectively, compared with 15.4% in omnivores.
Dietary intake of micronutrients was also considerably lower among vegans, but after factoring in intake from dietary supplements, no major differences emerged.
Mean birth weight, birth length, length of gestation, and rate of low birth weight (< 2500 g) were similar among omnivorous, fish/poultry-, and lacto/ovo-vegetarians. The prevalence of gestational diabetes, preeclampsia, and cesarean section was similar across groups, but the prevalence of anemia was higher among fish/poultry- and lacto/ovo-vegetarians than omnivorous participants.
As for preeclampsia, previous research in larger numbers of vegans found no indication of hypertensive disorders during pregnancy. Some studies, however, have suggested a link between preeclampsia and low intake of protein, calcium, or vitamin D, but the evidence is inconclusive, and the mechanism is unclear.
The observed associations, however, do not translate to causality, the authors cautioned. “Future studies should put more emphasis on characterizing the diet among those adhering to vegan diets and other forms of plant-based diets during pregnancy,” they wrote. “That would allow for stronger assumptions on possible causality between any association observed with birth or pregnancy outcomes in such studies and strengthen the basis for dietary recommendations.”
This study was funded by the Danish Council for Independent Research. The Danish National Birth Cohort Study is supported by the March of Dimes Birth Defects Foundation, the Danish Heart Association, Danish Medical Research Council, Sygekassernes Helsefond, the Innovation Fund Denmark, and the Danish National Research Foundation. The authors had no conflicts of interest to declare.
Mothers on vegan diets during pregnancy may give birth to infants with lower mean birth weights than those of omnivorous mothers and may also have a greater risk of preeclampsia, a prospective study of Danish pregnant women suggests.
According to researchers led by Signe Hedegaard, MD, of the department of obstetrics and Gynecology at Rigshospitalet, Juliane Marie Center, University of Copenhagen, low protein intake may lie behind the observed association with birth weight. The report was published in Acta Obstetricia et Gynecologica Scandinavica.
While vegan-identifying mothers were very few in number, the authors conceded, their babies were more likely to weigh less on average than those of omnivorous mothers — 3441 g vs 3601 g — despite a mean gestation 5 days longer.
Prevalence rates of low birth weight (< 2500 g) in the two groups were 11.1% and 2.5%, respectively, and the prevalence of preeclampsia was 11.1% vs 2.6%. The mean birth weight of infants in the maternal vegan group was about 240 g lower than infants born to omnivorous mothers.
“The lower birth weight of around 240 g among vegans compared with omnivorous mothers in our study strengthens our observation that vegans may be at higher risk of giving birth to low-birth-weight infants. The observed effect size on birth weight is comparable to what is observed among daily smokers relative to nonsmokers in this cohort,“ Dr. Hedegaard and colleagues wrote. “Furthermore, the on-average 5-day longer gestation observed among vegans in our study would be indicative of reduced fetal growth rate rather than lower birth weight due to shorter gestation.”
These findings emerged from data on 66,738 pregnancies in the Danish National Birth Cohort, 1996-2002. A food frequency questionnaire characterized pregnant subjects as fish/poultry-vegetarians, lacto/ovo-vegetarians, vegans, or omnivores, based on their self-reporting in gestational week 30.
A total of 98.7% (n = 65,872) of participants were defined as omnivorous, while 1.0% (n = 666), 0.3% (n = 183), and 0.03% (n = 18) identified as fish/poultry vegetarians, lacto/ovo-vegetarians, or vegans, respectively.
Those following plant-based diets of all types were slightly older, more often parous, and less likely to smoke. This plant dietary group also had a somewhat lower prevalence of overweight and obesity (prepregnancy body mass index > 25 [kg/m2]) and a higher prevalence of underweight (prepregnancy BMI < 18.5).
Total energy intake was modestly lower from plant-based diets, for a mean difference of 0.3-0.7 MJ (72-167 kcal) per day.
As for total protein intake, this was substantially lower for lacto/ovo-vegetarians and vegans: 13.3% and 10.4% of energy, respectively, compared with 15.4% in omnivores.
Dietary intake of micronutrients was also considerably lower among vegans, but after factoring in intake from dietary supplements, no major differences emerged.
Mean birth weight, birth length, length of gestation, and rate of low birth weight (< 2500 g) were similar among omnivorous, fish/poultry-, and lacto/ovo-vegetarians. The prevalence of gestational diabetes, preeclampsia, and cesarean section was similar across groups, but the prevalence of anemia was higher among fish/poultry- and lacto/ovo-vegetarians than omnivorous participants.
As for preeclampsia, previous research in larger numbers of vegans found no indication of hypertensive disorders during pregnancy. Some studies, however, have suggested a link between preeclampsia and low intake of protein, calcium, or vitamin D, but the evidence is inconclusive, and the mechanism is unclear.
The observed associations, however, do not translate to causality, the authors cautioned. “Future studies should put more emphasis on characterizing the diet among those adhering to vegan diets and other forms of plant-based diets during pregnancy,” they wrote. “That would allow for stronger assumptions on possible causality between any association observed with birth or pregnancy outcomes in such studies and strengthen the basis for dietary recommendations.”
This study was funded by the Danish Council for Independent Research. The Danish National Birth Cohort Study is supported by the March of Dimes Birth Defects Foundation, the Danish Heart Association, Danish Medical Research Council, Sygekassernes Helsefond, the Innovation Fund Denmark, and the Danish National Research Foundation. The authors had no conflicts of interest to declare.
Mothers on vegan diets during pregnancy may give birth to infants with lower mean birth weights than those of omnivorous mothers and may also have a greater risk of preeclampsia, a prospective study of Danish pregnant women suggests.
According to researchers led by Signe Hedegaard, MD, of the department of obstetrics and Gynecology at Rigshospitalet, Juliane Marie Center, University of Copenhagen, low protein intake may lie behind the observed association with birth weight. The report was published in Acta Obstetricia et Gynecologica Scandinavica.
While vegan-identifying mothers were very few in number, the authors conceded, their babies were more likely to weigh less on average than those of omnivorous mothers — 3441 g vs 3601 g — despite a mean gestation 5 days longer.
Prevalence rates of low birth weight (< 2500 g) in the two groups were 11.1% and 2.5%, respectively, and the prevalence of preeclampsia was 11.1% vs 2.6%. The mean birth weight of infants in the maternal vegan group was about 240 g lower than infants born to omnivorous mothers.
“The lower birth weight of around 240 g among vegans compared with omnivorous mothers in our study strengthens our observation that vegans may be at higher risk of giving birth to low-birth-weight infants. The observed effect size on birth weight is comparable to what is observed among daily smokers relative to nonsmokers in this cohort,“ Dr. Hedegaard and colleagues wrote. “Furthermore, the on-average 5-day longer gestation observed among vegans in our study would be indicative of reduced fetal growth rate rather than lower birth weight due to shorter gestation.”
These findings emerged from data on 66,738 pregnancies in the Danish National Birth Cohort, 1996-2002. A food frequency questionnaire characterized pregnant subjects as fish/poultry-vegetarians, lacto/ovo-vegetarians, vegans, or omnivores, based on their self-reporting in gestational week 30.
A total of 98.7% (n = 65,872) of participants were defined as omnivorous, while 1.0% (n = 666), 0.3% (n = 183), and 0.03% (n = 18) identified as fish/poultry vegetarians, lacto/ovo-vegetarians, or vegans, respectively.
Those following plant-based diets of all types were slightly older, more often parous, and less likely to smoke. This plant dietary group also had a somewhat lower prevalence of overweight and obesity (prepregnancy body mass index > 25 [kg/m2]) and a higher prevalence of underweight (prepregnancy BMI < 18.5).
Total energy intake was modestly lower from plant-based diets, for a mean difference of 0.3-0.7 MJ (72-167 kcal) per day.
As for total protein intake, this was substantially lower for lacto/ovo-vegetarians and vegans: 13.3% and 10.4% of energy, respectively, compared with 15.4% in omnivores.
Dietary intake of micronutrients was also considerably lower among vegans, but after factoring in intake from dietary supplements, no major differences emerged.
Mean birth weight, birth length, length of gestation, and rate of low birth weight (< 2500 g) were similar among omnivorous, fish/poultry-, and lacto/ovo-vegetarians. The prevalence of gestational diabetes, preeclampsia, and cesarean section was similar across groups, but the prevalence of anemia was higher among fish/poultry- and lacto/ovo-vegetarians than omnivorous participants.
As for preeclampsia, previous research in larger numbers of vegans found no indication of hypertensive disorders during pregnancy. Some studies, however, have suggested a link between preeclampsia and low intake of protein, calcium, or vitamin D, but the evidence is inconclusive, and the mechanism is unclear.
The observed associations, however, do not translate to causality, the authors cautioned. “Future studies should put more emphasis on characterizing the diet among those adhering to vegan diets and other forms of plant-based diets during pregnancy,” they wrote. “That would allow for stronger assumptions on possible causality between any association observed with birth or pregnancy outcomes in such studies and strengthen the basis for dietary recommendations.”
This study was funded by the Danish Council for Independent Research. The Danish National Birth Cohort Study is supported by the March of Dimes Birth Defects Foundation, the Danish Heart Association, Danish Medical Research Council, Sygekassernes Helsefond, the Innovation Fund Denmark, and the Danish National Research Foundation. The authors had no conflicts of interest to declare.
FROM ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA