From the Journals

Muvalaplin, a novel oral medication, safely and effectively lowers high levels of lipoprotein(a), or Lp(a), results from the phase 2 KRAKEN trial show.

Concentrations of Lp(a) cholesterol are genetically determined and remain steady throughout life. Levels of 125 nmol/L or higher promote clotting and inflammation, significantly increasing the risk for heart attack, stroke, aortic stenosis, and peripheral artery disease. This affects about 20% of the population, particularly people of Black African and South Asian descent.

There are currently no approved therapies that lower Lp(a), said study author Stephen Nicholls, MBBS, PhD, director of the Victorian Heart Institute at Monash University in Melbourne, Australia. Several injectable therapies are currently in clinical trials, but muvalaplin is the only oral option. The new drug lowers Lp(a) levels by disrupting the bond between the two parts of the Lp(a) particle.

 

The KRAKEN Trial

In the KRAKEN trial, 233 adults from around the world with very high Lp(a) levels (> 175 nmol/L) were randomized either to one of three daily doses of muvalaplin — 10, 60, or 240 mg — or to placebo for 12 weeks.

The researchers measured Lp(a) levels with a standard blood test and with a novel test designed to specifically measure levels of intact Lp(a) particles in the blood. In addition to Lp(a), the standard test detects one of its components, apolipoprotein A particles, that are bound to the drug, which can lead to an underestimation of Lp(a) reductions.

Lp(a) levels were up to 70.0% lower in the muvalaplin group than in the placebo group when measured with the traditional blood test and by up to 85.5% lower when measured with the new test. Approximately 82% of participants achieved an Lp(a) level lower than 125 nmol/L when measured with the traditional blood test, and 97% achieved that level when the new test was used. Patients who received either 60 or 240 mg of muvalaplin had similar reductions in Lp(a) levels, which were greater than the reductions seen in the 10 mg group. The drug was safe and generally well tolerated.

“This is a very reassuring phase 2 result,” Nicholls said when he presented the KRAKEN findings at the American Heart Association (AHA) Scientific Sessions 2024 in Chicago, which were simultaneously published online in JAMA. “It encourages the ongoing development of this agent.”

Lp(a) levels are not affected by changes in lifestyle or diet or by traditional lipid-lowering treatments like statins, said Erin Michos, MD, a cardiologist at the Johns Hopkins University School of Medicine in Baltimore, Maryland, who was not involved in the study.

And high Lp(a) levels confer significant cardiovascular risk even when other risks are reduced. So muvalaplin is “a highly promising approach to treat a previously untreatable disorder,” she explained.

Larger and longer studies, with more diverse patient populations, are needed to confirm the results and to determine whether reducing Lp(a) also improves cardiovascular outcomes, Michos pointed out.

“While muvalaplin appears to be an effective approach to lowering Lp(a) levels, we still need to study whether Lp(a) lowering will result in fewer heart attacks and strokes,” Nicholls added.

A version of this article appeared on Medscape.com.

Muvalaplin, a novel oral medication, safely and effectively lowers high levels of lipoprotein(a), or Lp(a), results from the phase 2 KRAKEN trial show.

Concentrations of Lp(a) cholesterol are genetically determined and remain steady throughout life. Levels of 125 nmol/L or higher promote clotting and inflammation, significantly increasing the risk for heart attack, stroke, aortic stenosis, and peripheral artery disease. This affects about 20% of the population, particularly people of Black African and South Asian descent.

There are currently no approved therapies that lower Lp(a), said study author Stephen Nicholls, MBBS, PhD, director of the Victorian Heart Institute at Monash University in Melbourne, Australia. Several injectable therapies are currently in clinical trials, but muvalaplin is the only oral option. The new drug lowers Lp(a) levels by disrupting the bond between the two parts of the Lp(a) particle.

 

The KRAKEN Trial

In the KRAKEN trial, 233 adults from around the world with very high Lp(a) levels (> 175 nmol/L) were randomized either to one of three daily doses of muvalaplin — 10, 60, or 240 mg — or to placebo for 12 weeks.

The researchers measured Lp(a) levels with a standard blood test and with a novel test designed to specifically measure levels of intact Lp(a) particles in the blood. In addition to Lp(a), the standard test detects one of its components, apolipoprotein A particles, that are bound to the drug, which can lead to an underestimation of Lp(a) reductions.

Lp(a) levels were up to 70.0% lower in the muvalaplin group than in the placebo group when measured with the traditional blood test and by up to 85.5% lower when measured with the new test. Approximately 82% of participants achieved an Lp(a) level lower than 125 nmol/L when measured with the traditional blood test, and 97% achieved that level when the new test was used. Patients who received either 60 or 240 mg of muvalaplin had similar reductions in Lp(a) levels, which were greater than the reductions seen in the 10 mg group. The drug was safe and generally well tolerated.

“This is a very reassuring phase 2 result,” Nicholls said when he presented the KRAKEN findings at the American Heart Association (AHA) Scientific Sessions 2024 in Chicago, which were simultaneously published online in JAMA. “It encourages the ongoing development of this agent.”

Lp(a) levels are not affected by changes in lifestyle or diet or by traditional lipid-lowering treatments like statins, said Erin Michos, MD, a cardiologist at the Johns Hopkins University School of Medicine in Baltimore, Maryland, who was not involved in the study.

And high Lp(a) levels confer significant cardiovascular risk even when other risks are reduced. So muvalaplin is “a highly promising approach to treat a previously untreatable disorder,” she explained.

Larger and longer studies, with more diverse patient populations, are needed to confirm the results and to determine whether reducing Lp(a) also improves cardiovascular outcomes, Michos pointed out.

“While muvalaplin appears to be an effective approach to lowering Lp(a) levels, we still need to study whether Lp(a) lowering will result in fewer heart attacks and strokes,” Nicholls added.

A version of this article appeared on Medscape.com.

Muvalaplin, a novel oral medication, safely and effectively lowers high levels of lipoprotein(a), or Lp(a), results from the phase 2 KRAKEN trial show.

Concentrations of Lp(a) cholesterol are genetically determined and remain steady throughout life. Levels of 125 nmol/L or higher promote clotting and inflammation, significantly increasing the risk for heart attack, stroke, aortic stenosis, and peripheral artery disease. This affects about 20% of the population, particularly people of Black African and South Asian descent.

There are currently no approved therapies that lower Lp(a), said study author Stephen Nicholls, MBBS, PhD, director of the Victorian Heart Institute at Monash University in Melbourne, Australia. Several injectable therapies are currently in clinical trials, but muvalaplin is the only oral option. The new drug lowers Lp(a) levels by disrupting the bond between the two parts of the Lp(a) particle.

 

The KRAKEN Trial

In the KRAKEN trial, 233 adults from around the world with very high Lp(a) levels (> 175 nmol/L) were randomized either to one of three daily doses of muvalaplin — 10, 60, or 240 mg — or to placebo for 12 weeks.

The researchers measured Lp(a) levels with a standard blood test and with a novel test designed to specifically measure levels of intact Lp(a) particles in the blood. In addition to Lp(a), the standard test detects one of its components, apolipoprotein A particles, that are bound to the drug, which can lead to an underestimation of Lp(a) reductions.

Lp(a) levels were up to 70.0% lower in the muvalaplin group than in the placebo group when measured with the traditional blood test and by up to 85.5% lower when measured with the new test. Approximately 82% of participants achieved an Lp(a) level lower than 125 nmol/L when measured with the traditional blood test, and 97% achieved that level when the new test was used. Patients who received either 60 or 240 mg of muvalaplin had similar reductions in Lp(a) levels, which were greater than the reductions seen in the 10 mg group. The drug was safe and generally well tolerated.

“This is a very reassuring phase 2 result,” Nicholls said when he presented the KRAKEN findings at the American Heart Association (AHA) Scientific Sessions 2024 in Chicago, which were simultaneously published online in JAMA. “It encourages the ongoing development of this agent.”

Lp(a) levels are not affected by changes in lifestyle or diet or by traditional lipid-lowering treatments like statins, said Erin Michos, MD, a cardiologist at the Johns Hopkins University School of Medicine in Baltimore, Maryland, who was not involved in the study.

And high Lp(a) levels confer significant cardiovascular risk even when other risks are reduced. So muvalaplin is “a highly promising approach to treat a previously untreatable disorder,” she explained.

Larger and longer studies, with more diverse patient populations, are needed to confirm the results and to determine whether reducing Lp(a) also improves cardiovascular outcomes, Michos pointed out.

“While muvalaplin appears to be an effective approach to lowering Lp(a) levels, we still need to study whether Lp(a) lowering will result in fewer heart attacks and strokes,” Nicholls added.

A version of this article appeared on Medscape.com.

TOPLINE:

Light-intensity walking reduces postprandial glucose and diastolic blood pressure in young adults with obesity and can improve insulin levels, depending on the walking pattern.

METHODOLOGY:

• Researchers conducted a randomized crossover trial with 16 young adults aged 18-34 years with body mass index (BMI) ≥ 25 in Bangkok, Thailand, to examine the effects of different light-intensity walking patterns on postprandial cardiometabolic responses.
• Participants (mean age, 25; mean BMI, 29.8) engaged in four 7-hour experimental conditions, each involving a different activity: Uninterrupted sitting, 30-minutes of light-intensity walking, 3-minute light-intensity walking every 30 minutes, or a combination of both walking regimens. There was a 7- to 20-day washout period between each experiment period.
• Baseline and 6-hour postprandial concentrations of glucose, insulin, triglycerides, and blood pressure were measured.
• Incremental areas under the curve (iAUC) for each outcome and average blood pressure were compared between sitting and walking conditions.

TAKEAWAY:

• All the walking interventions reduced postprandial glucose concentrations and diastolic blood pressure compared with uninterrupted sitting.
• Continuous 30-minute light-intensity walking alone or combined with brief 3-minute bouts also attenuated postprandial insulin concentrations.
• No significant differences were found for triglycerides iAUC and systolic blood pressure between the four experiment conditions.

IN PRACTICE:

“These findings support the notion that engaging in light-intensity walking, regardless of the pattern, provides benefits to glycemic control. Moreover, the timing and patterns of light-intensity physical activity may be an important factor in reducing postprandial insulin concentrations,” the authors wrote.

SOURCE:

The study, led by Waris Wongpipit, PhD, Division of Health and Physical Education, Chulalongkorn University in Bangkok, Thailand, was published online in The Journal of Clinical Endocrinology & Metabolism.

LIMITATIONS:

The study’s small sample size of 16 participants may limit the generalizability of the findings. The short duration of the study (7-hour experimental conditions) may not reflect long-term effects. The prescribed activities and dietary profiles, along with the controlled laboratory setting, may not accurately represent real-world conditions. The lack of objective physical activity/sedentary behavior measurement to confirm compliance between conditions is a limitation.

DISCLOSURES:

This study was supported by grants from the Office of the Permanent Secretary, Ministry of Higher Education, Science, Research and Innovation, Thailand Science Research and Innovation, and Chulalongkorn University. Wongpipit received grant support from these organizations. Paddy C. Dempsey is supported by a National Health and Medical Research Council of Australia research fellowship. The other authors had no disclosures.

 

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Light-intensity walking reduces postprandial glucose and diastolic blood pressure in young adults with obesity and can improve insulin levels, depending on the walking pattern.

METHODOLOGY:

• Researchers conducted a randomized crossover trial with 16 young adults aged 18-34 years with body mass index (BMI) ≥ 25 in Bangkok, Thailand, to examine the effects of different light-intensity walking patterns on postprandial cardiometabolic responses.
• Participants (mean age, 25; mean BMI, 29.8) engaged in four 7-hour experimental conditions, each involving a different activity: Uninterrupted sitting, 30-minutes of light-intensity walking, 3-minute light-intensity walking every 30 minutes, or a combination of both walking regimens. There was a 7- to 20-day washout period between each experiment period.
• Baseline and 6-hour postprandial concentrations of glucose, insulin, triglycerides, and blood pressure were measured.
• Incremental areas under the curve (iAUC) for each outcome and average blood pressure were compared between sitting and walking conditions.

TAKEAWAY:

• All the walking interventions reduced postprandial glucose concentrations and diastolic blood pressure compared with uninterrupted sitting.
• Continuous 30-minute light-intensity walking alone or combined with brief 3-minute bouts also attenuated postprandial insulin concentrations.
• No significant differences were found for triglycerides iAUC and systolic blood pressure between the four experiment conditions.

IN PRACTICE:

“These findings support the notion that engaging in light-intensity walking, regardless of the pattern, provides benefits to glycemic control. Moreover, the timing and patterns of light-intensity physical activity may be an important factor in reducing postprandial insulin concentrations,” the authors wrote.

SOURCE:

The study, led by Waris Wongpipit, PhD, Division of Health and Physical Education, Chulalongkorn University in Bangkok, Thailand, was published online in The Journal of Clinical Endocrinology & Metabolism.

LIMITATIONS:

The study’s small sample size of 16 participants may limit the generalizability of the findings. The short duration of the study (7-hour experimental conditions) may not reflect long-term effects. The prescribed activities and dietary profiles, along with the controlled laboratory setting, may not accurately represent real-world conditions. The lack of objective physical activity/sedentary behavior measurement to confirm compliance between conditions is a limitation.

DISCLOSURES:

This study was supported by grants from the Office of the Permanent Secretary, Ministry of Higher Education, Science, Research and Innovation, Thailand Science Research and Innovation, and Chulalongkorn University. Wongpipit received grant support from these organizations. Paddy C. Dempsey is supported by a National Health and Medical Research Council of Australia research fellowship. The other authors had no disclosures.

 

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Light-intensity walking reduces postprandial glucose and diastolic blood pressure in young adults with obesity and can improve insulin levels, depending on the walking pattern.

METHODOLOGY:

• Researchers conducted a randomized crossover trial with 16 young adults aged 18-34 years with body mass index (BMI) ≥ 25 in Bangkok, Thailand, to examine the effects of different light-intensity walking patterns on postprandial cardiometabolic responses.
• Participants (mean age, 25; mean BMI, 29.8) engaged in four 7-hour experimental conditions, each involving a different activity: Uninterrupted sitting, 30-minutes of light-intensity walking, 3-minute light-intensity walking every 30 minutes, or a combination of both walking regimens. There was a 7- to 20-day washout period between each experiment period.
• Baseline and 6-hour postprandial concentrations of glucose, insulin, triglycerides, and blood pressure were measured.
• Incremental areas under the curve (iAUC) for each outcome and average blood pressure were compared between sitting and walking conditions.

TAKEAWAY:

• All the walking interventions reduced postprandial glucose concentrations and diastolic blood pressure compared with uninterrupted sitting.
• Continuous 30-minute light-intensity walking alone or combined with brief 3-minute bouts also attenuated postprandial insulin concentrations.
• No significant differences were found for triglycerides iAUC and systolic blood pressure between the four experiment conditions.

IN PRACTICE:

“These findings support the notion that engaging in light-intensity walking, regardless of the pattern, provides benefits to glycemic control. Moreover, the timing and patterns of light-intensity physical activity may be an important factor in reducing postprandial insulin concentrations,” the authors wrote.

SOURCE:

The study, led by Waris Wongpipit, PhD, Division of Health and Physical Education, Chulalongkorn University in Bangkok, Thailand, was published online in The Journal of Clinical Endocrinology & Metabolism.

LIMITATIONS:

The study’s small sample size of 16 participants may limit the generalizability of the findings. The short duration of the study (7-hour experimental conditions) may not reflect long-term effects. The prescribed activities and dietary profiles, along with the controlled laboratory setting, may not accurately represent real-world conditions. The lack of objective physical activity/sedentary behavior measurement to confirm compliance between conditions is a limitation.

DISCLOSURES:

This study was supported by grants from the Office of the Permanent Secretary, Ministry of Higher Education, Science, Research and Innovation, Thailand Science Research and Innovation, and Chulalongkorn University. Wongpipit received grant support from these organizations. Paddy C. Dempsey is supported by a National Health and Medical Research Council of Australia research fellowship. The other authors had no disclosures.

 

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Replacing animal-based protein sources with plant-based alternatives in older adults reduced both the quality and quantity of protein intake only when all animal-based foods were eliminated for a vegan scenario, finds a simulation study that suggests a switch to 60% plant-based protein seems to be safe.

METHODOLOGY:

• For environmental and health reasons, the Dutch Health Council advises a switch to an animal-based to plant-based protein ratio of 40:60, but older adults also need adequate protein intake to prevent muscle loss and maintain health, and it’s uncertain if they can meet their protein requirements through a more sustainable diet.
• This simulation study evaluated the impact of more sustainable eating patterns on protein quantity and quality by using data of 607 community-dwelling older adults aged 65-79 years from the Dutch National Food Consumption Survey 2019-2021.
• Data on food consumption were collected via two 24-hour dietary recalls per participant on nonconsecutive days and calculated as three main meals and four in-between moments each day.
• In the simulation, certain food products in the original diet were replaced from a list of similar plant-based alternatives, using a random number generator, to create scenarios for two flexitarian diets (40% and 80% meat and fish were replaced), one pescetarian diet (meat was replaced, but not fish and other animal-based products), one vegetarian diet (meat and fish were replaced, but not other animal-based products), and one vegan diet (fish, meat, and animal-based products were replaced).
• Protein intake was calculated in three ways for each meal moment, including by total protein intake (quantity) and by the proportion of indispensable amino acids that must be eaten together within a limited timeframe (quality).

TAKEAWAY:

• In the reference diet, the total daily plant-based protein intake was 39.0% in men and 37.7% in women, while in the vegetarian scenario, it was 59.1% in men and 54.2% in women.
• In the flexitarian, pescetarian, and vegetarian scenarios, the usable protein intake was comparable; in the vegan scenario, both total protein intake and usable protein intake were lower, leading to nearly 50% less usable protein than in the original diet.
• In the original diet, 7.5% of men and 11.1% of women did not meet the estimated average requirements (EARs) for utilizable protein; in the vegan scenario, 83.3% of both sexes had a protein intake below the EAR.
• The loss in protein intake (quantity) in all scenarios was mainly observed at dinner; the loss in protein quality was greatest at breakfast and lunch, especially in lysine (found in beans or soy milk).

IN PRACTICE:

“Changing protein intake to 60% plant-based protein seems to be safe for older adults in terms of protein intake. In contrast, a vegan pattern was associated with a substantial decline in protein availability, leading to a majority of older adults not reaching the recommended protein levels,” the authors wrote.

SOURCE:

The study was led by Jos W. Borkent, HAN University of Applied Sciences, Nijmegen, the Netherlands. It was published online in The Journal of Nutrition, Health and Aging.

LIMITATIONS:

Study limitations included the use of a simulation model, which may not fully reflect real-life dietary practices. The strict timeframe for assessing protein quality (optimal combinations of indispensible amino acids) within one meal moment may have led to an underestimation of protein availability, especially in the vegan scenario. Additionally, the choice of processed meat replacements in the vegan scenario may not have represented protein sources of the highest quality available. Higher protein quality per meal in the vegan scenario is possible when smart combinations are made in multiple meal components.

DISCLOSURES:

The study was partly funded by a grant from the Taskforce for Applied Research SIA, which is part of the Netherlands Organisation for Scientific Research and financed by the Dutch Ministry of Education, Culture and Science and by a fund of the Dutch Dairy Association. The authors declared that they had no conflicts of interest.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Replacing animal-based protein sources with plant-based alternatives in older adults reduced both the quality and quantity of protein intake only when all animal-based foods were eliminated for a vegan scenario, finds a simulation study that suggests a switch to 60% plant-based protein seems to be safe.

METHODOLOGY:

• For environmental and health reasons, the Dutch Health Council advises a switch to an animal-based to plant-based protein ratio of 40:60, but older adults also need adequate protein intake to prevent muscle loss and maintain health, and it’s uncertain if they can meet their protein requirements through a more sustainable diet.
• This simulation study evaluated the impact of more sustainable eating patterns on protein quantity and quality by using data of 607 community-dwelling older adults aged 65-79 years from the Dutch National Food Consumption Survey 2019-2021.
• Data on food consumption were collected via two 24-hour dietary recalls per participant on nonconsecutive days and calculated as three main meals and four in-between moments each day.
• In the simulation, certain food products in the original diet were replaced from a list of similar plant-based alternatives, using a random number generator, to create scenarios for two flexitarian diets (40% and 80% meat and fish were replaced), one pescetarian diet (meat was replaced, but not fish and other animal-based products), one vegetarian diet (meat and fish were replaced, but not other animal-based products), and one vegan diet (fish, meat, and animal-based products were replaced).
• Protein intake was calculated in three ways for each meal moment, including by total protein intake (quantity) and by the proportion of indispensable amino acids that must be eaten together within a limited timeframe (quality).

TAKEAWAY:

• In the reference diet, the total daily plant-based protein intake was 39.0% in men and 37.7% in women, while in the vegetarian scenario, it was 59.1% in men and 54.2% in women.
• In the flexitarian, pescetarian, and vegetarian scenarios, the usable protein intake was comparable; in the vegan scenario, both total protein intake and usable protein intake were lower, leading to nearly 50% less usable protein than in the original diet.
• In the original diet, 7.5% of men and 11.1% of women did not meet the estimated average requirements (EARs) for utilizable protein; in the vegan scenario, 83.3% of both sexes had a protein intake below the EAR.
• The loss in protein intake (quantity) in all scenarios was mainly observed at dinner; the loss in protein quality was greatest at breakfast and lunch, especially in lysine (found in beans or soy milk).

IN PRACTICE:

“Changing protein intake to 60% plant-based protein seems to be safe for older adults in terms of protein intake. In contrast, a vegan pattern was associated with a substantial decline in protein availability, leading to a majority of older adults not reaching the recommended protein levels,” the authors wrote.

SOURCE:

The study was led by Jos W. Borkent, HAN University of Applied Sciences, Nijmegen, the Netherlands. It was published online in The Journal of Nutrition, Health and Aging.

LIMITATIONS:

Study limitations included the use of a simulation model, which may not fully reflect real-life dietary practices. The strict timeframe for assessing protein quality (optimal combinations of indispensible amino acids) within one meal moment may have led to an underestimation of protein availability, especially in the vegan scenario. Additionally, the choice of processed meat replacements in the vegan scenario may not have represented protein sources of the highest quality available. Higher protein quality per meal in the vegan scenario is possible when smart combinations are made in multiple meal components.

DISCLOSURES:

The study was partly funded by a grant from the Taskforce for Applied Research SIA, which is part of the Netherlands Organisation for Scientific Research and financed by the Dutch Ministry of Education, Culture and Science and by a fund of the Dutch Dairy Association. The authors declared that they had no conflicts of interest.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Replacing animal-based protein sources with plant-based alternatives in older adults reduced both the quality and quantity of protein intake only when all animal-based foods were eliminated for a vegan scenario, finds a simulation study that suggests a switch to 60% plant-based protein seems to be safe.

METHODOLOGY:

• For environmental and health reasons, the Dutch Health Council advises a switch to an animal-based to plant-based protein ratio of 40:60, but older adults also need adequate protein intake to prevent muscle loss and maintain health, and it’s uncertain if they can meet their protein requirements through a more sustainable diet.
• This simulation study evaluated the impact of more sustainable eating patterns on protein quantity and quality by using data of 607 community-dwelling older adults aged 65-79 years from the Dutch National Food Consumption Survey 2019-2021.
• Data on food consumption were collected via two 24-hour dietary recalls per participant on nonconsecutive days and calculated as three main meals and four in-between moments each day.
• In the simulation, certain food products in the original diet were replaced from a list of similar plant-based alternatives, using a random number generator, to create scenarios for two flexitarian diets (40% and 80% meat and fish were replaced), one pescetarian diet (meat was replaced, but not fish and other animal-based products), one vegetarian diet (meat and fish were replaced, but not other animal-based products), and one vegan diet (fish, meat, and animal-based products were replaced).
• Protein intake was calculated in three ways for each meal moment, including by total protein intake (quantity) and by the proportion of indispensable amino acids that must be eaten together within a limited timeframe (quality).

TAKEAWAY:

• In the reference diet, the total daily plant-based protein intake was 39.0% in men and 37.7% in women, while in the vegetarian scenario, it was 59.1% in men and 54.2% in women.
• In the flexitarian, pescetarian, and vegetarian scenarios, the usable protein intake was comparable; in the vegan scenario, both total protein intake and usable protein intake were lower, leading to nearly 50% less usable protein than in the original diet.
• In the original diet, 7.5% of men and 11.1% of women did not meet the estimated average requirements (EARs) for utilizable protein; in the vegan scenario, 83.3% of both sexes had a protein intake below the EAR.
• The loss in protein intake (quantity) in all scenarios was mainly observed at dinner; the loss in protein quality was greatest at breakfast and lunch, especially in lysine (found in beans or soy milk).

IN PRACTICE:

“Changing protein intake to 60% plant-based protein seems to be safe for older adults in terms of protein intake. In contrast, a vegan pattern was associated with a substantial decline in protein availability, leading to a majority of older adults not reaching the recommended protein levels,” the authors wrote.

SOURCE:

The study was led by Jos W. Borkent, HAN University of Applied Sciences, Nijmegen, the Netherlands. It was published online in The Journal of Nutrition, Health and Aging.

LIMITATIONS:

Study limitations included the use of a simulation model, which may not fully reflect real-life dietary practices. The strict timeframe for assessing protein quality (optimal combinations of indispensible amino acids) within one meal moment may have led to an underestimation of protein availability, especially in the vegan scenario. Additionally, the choice of processed meat replacements in the vegan scenario may not have represented protein sources of the highest quality available. Higher protein quality per meal in the vegan scenario is possible when smart combinations are made in multiple meal components.

DISCLOSURES:

The study was partly funded by a grant from the Taskforce for Applied Research SIA, which is part of the Netherlands Organisation for Scientific Research and financed by the Dutch Ministry of Education, Culture and Science and by a fund of the Dutch Dairy Association. The authors declared that they had no conflicts of interest.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

TOPLINE:

Exposure to fine particulate matter (PM_2.5) during pregnancy is associated with an increased risk for spontaneous preterm birth, with peak vulnerability in the second trimester. Lower socioeconomic status, limited green space exposure, and extreme heat amplify this risk, whereas living around more trees provides protective effects.

METHODOLOGY:

• The researchers conducted a population-based retrospective cohort study to examine the associations of exposures to total PM_2.5 and five constituents (black carbon, nitrate, organic matter, and sulfate) during pregnancy with spontaneous preterm birth.
• They included 409,037 singleton live births from the Kaiser Permanente Southern California health care system between 2008 and 2018, with mothers having a mean age of 30.3 years at delivery (51% Hispanic).
• Daily total PM_2.5 concentrations and monthly data on the constituents in California were obtained; mean exposures during the entire pregnancy and in each trimester were calculated.
• Spontaneous preterm births were identified through the evaluation of preterm labor visits and were defined as a delivery occurring before 37 weeks following the onset of spontaneous labor, without pregnancy complications, and within 7 days of the last preterm labor visit.
• The analysis also examined the effect of factors such as race and ethnicity, education, median household income, exposure to green spaces, wildfire smoke, and temperature.

TAKEAWAY:

• Each 2.76 µg/m³ increase in total PM_2.5 exposure during pregnancy raised the risk for spontaneous preterm birth by 15% (P < .001), with black carbon showing the highest risk (adjusted odds ratio [aOR], 1.15; 95% CI, 1.12-1.18; P < .001).
• Exposure to PM_2.5 during the second trimester showed the highest association with spontaneous preterm birth (aOR, 1.10; P < .001), followed by that during the third (aOR, 1.09; P < .001) and first (aOR, 1.07; P < .001) trimesters.
• Individuals with lower education levels showed a higher risk for spontaneous preterm birth than those with more than 4 years of college education (P = .003).
• Exposure to extreme heat (P < .001) and lower exposure to total green space (P = .003) increased the risk for spontaneous preterm abortion.

IN PRACTICE:

“Targeted and preventive public health interventions among these subpopulations with high risk may be critical for minimizing the burden of spontaneous preterm birth,” the authors wrote.

SOURCE:

The study was led by Anqi Jiao of the program in public health at the Department of Environmental and Occupational Health at the University of California, Irvine. It was published online in JAMA Network Open.

LIMITATIONS:

According to the authors, exposure misclassification was inevitable as individual exposure to PM_2.5 was estimated according to census tract-level data without considering personal activity patterns. Only five major PM_2.5 constituents were measured due to data availability. Additionally, street-view green space data were considered spatial snapshots, which cannot capture temporal variations, possibly leading to exposure misclassification and biased associations in either direction.

DISCLOSURES:

The study was supported by the National Institute of Environmental Health Sciences and the California Air Resources Board. One author reported receiving research funding from pharmaceutical and biopharmaceutical companies, which was paid to the institute. Another author reported receiving grants from a medical technology company outside the submitted work.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Exposure to fine particulate matter (PM_2.5) during pregnancy is associated with an increased risk for spontaneous preterm birth, with peak vulnerability in the second trimester. Lower socioeconomic status, limited green space exposure, and extreme heat amplify this risk, whereas living around more trees provides protective effects.

METHODOLOGY:

• The researchers conducted a population-based retrospective cohort study to examine the associations of exposures to total PM_2.5 and five constituents (black carbon, nitrate, organic matter, and sulfate) during pregnancy with spontaneous preterm birth.
• They included 409,037 singleton live births from the Kaiser Permanente Southern California health care system between 2008 and 2018, with mothers having a mean age of 30.3 years at delivery (51% Hispanic).
• Daily total PM_2.5 concentrations and monthly data on the constituents in California were obtained; mean exposures during the entire pregnancy and in each trimester were calculated.
• Spontaneous preterm births were identified through the evaluation of preterm labor visits and were defined as a delivery occurring before 37 weeks following the onset of spontaneous labor, without pregnancy complications, and within 7 days of the last preterm labor visit.
• The analysis also examined the effect of factors such as race and ethnicity, education, median household income, exposure to green spaces, wildfire smoke, and temperature.

TAKEAWAY:

• Each 2.76 µg/m³ increase in total PM_2.5 exposure during pregnancy raised the risk for spontaneous preterm birth by 15% (P < .001), with black carbon showing the highest risk (adjusted odds ratio [aOR], 1.15; 95% CI, 1.12-1.18; P < .001).
• Exposure to PM_2.5 during the second trimester showed the highest association with spontaneous preterm birth (aOR, 1.10; P < .001), followed by that during the third (aOR, 1.09; P < .001) and first (aOR, 1.07; P < .001) trimesters.
• Individuals with lower education levels showed a higher risk for spontaneous preterm birth than those with more than 4 years of college education (P = .003).
• Exposure to extreme heat (P < .001) and lower exposure to total green space (P = .003) increased the risk for spontaneous preterm abortion.

IN PRACTICE:

“Targeted and preventive public health interventions among these subpopulations with high risk may be critical for minimizing the burden of spontaneous preterm birth,” the authors wrote.

SOURCE:

The study was led by Anqi Jiao of the program in public health at the Department of Environmental and Occupational Health at the University of California, Irvine. It was published online in JAMA Network Open.

LIMITATIONS:

According to the authors, exposure misclassification was inevitable as individual exposure to PM_2.5 was estimated according to census tract-level data without considering personal activity patterns. Only five major PM_2.5 constituents were measured due to data availability. Additionally, street-view green space data were considered spatial snapshots, which cannot capture temporal variations, possibly leading to exposure misclassification and biased associations in either direction.

DISCLOSURES:

The study was supported by the National Institute of Environmental Health Sciences and the California Air Resources Board. One author reported receiving research funding from pharmaceutical and biopharmaceutical companies, which was paid to the institute. Another author reported receiving grants from a medical technology company outside the submitted work.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Exposure to fine particulate matter (PM_2.5) during pregnancy is associated with an increased risk for spontaneous preterm birth, with peak vulnerability in the second trimester. Lower socioeconomic status, limited green space exposure, and extreme heat amplify this risk, whereas living around more trees provides protective effects.

METHODOLOGY:

• The researchers conducted a population-based retrospective cohort study to examine the associations of exposures to total PM_2.5 and five constituents (black carbon, nitrate, organic matter, and sulfate) during pregnancy with spontaneous preterm birth.
• They included 409,037 singleton live births from the Kaiser Permanente Southern California health care system between 2008 and 2018, with mothers having a mean age of 30.3 years at delivery (51% Hispanic).
• Daily total PM_2.5 concentrations and monthly data on the constituents in California were obtained; mean exposures during the entire pregnancy and in each trimester were calculated.
• Spontaneous preterm births were identified through the evaluation of preterm labor visits and were defined as a delivery occurring before 37 weeks following the onset of spontaneous labor, without pregnancy complications, and within 7 days of the last preterm labor visit.
• The analysis also examined the effect of factors such as race and ethnicity, education, median household income, exposure to green spaces, wildfire smoke, and temperature.

TAKEAWAY:

• Each 2.76 µg/m³ increase in total PM_2.5 exposure during pregnancy raised the risk for spontaneous preterm birth by 15% (P < .001), with black carbon showing the highest risk (adjusted odds ratio [aOR], 1.15; 95% CI, 1.12-1.18; P < .001).
• Exposure to PM_2.5 during the second trimester showed the highest association with spontaneous preterm birth (aOR, 1.10; P < .001), followed by that during the third (aOR, 1.09; P < .001) and first (aOR, 1.07; P < .001) trimesters.
• Individuals with lower education levels showed a higher risk for spontaneous preterm birth than those with more than 4 years of college education (P = .003).
• Exposure to extreme heat (P < .001) and lower exposure to total green space (P = .003) increased the risk for spontaneous preterm abortion.

IN PRACTICE:

“Targeted and preventive public health interventions among these subpopulations with high risk may be critical for minimizing the burden of spontaneous preterm birth,” the authors wrote.

SOURCE:

The study was led by Anqi Jiao of the program in public health at the Department of Environmental and Occupational Health at the University of California, Irvine. It was published online in JAMA Network Open.

LIMITATIONS:

According to the authors, exposure misclassification was inevitable as individual exposure to PM_2.5 was estimated according to census tract-level data without considering personal activity patterns. Only five major PM_2.5 constituents were measured due to data availability. Additionally, street-view green space data were considered spatial snapshots, which cannot capture temporal variations, possibly leading to exposure misclassification and biased associations in either direction.

DISCLOSURES:

The study was supported by the National Institute of Environmental Health Sciences and the California Air Resources Board. One author reported receiving research funding from pharmaceutical and biopharmaceutical companies, which was paid to the institute. Another author reported receiving grants from a medical technology company outside the submitted work.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE:

Women with polycystic ovary syndrome (PCOS) have 26% higher nulliparity rates and give birth at more advanced ages despite similar family aspirations and higher rates of fertility treatment. Later PCOS diagnosis is associated with double the rate of advanced maternal age at childbirth.

METHODOLOGY:

• A prospective cohort study followed 14,247 Australian women from 1996 (age, 18-23 years) to 2021 (age, 43-48 years), comparing 981 women with self-reported PCOS against 13,266 without PCOS.
• Participants completed surveys approximately every 3 years, with data collection including childbirth events, fertility issues, and treatment history from 20 weeks of gestational age, including stillbirths.
• Analysis focused on comparing parity, maternal age at deliveries, and factors associated with advanced maternal age between groups, with adjustments made for education level, area of residence, marital status, body mass index group, hypertension, and type 2 diabetes.

TAKEAWAY:

• Compared with women without PCOS, those with PCOS had fewer births (1.9 ± 1.2 vs 1.7 ± 1.3; P < .001) and higher nulliparity rates (18% vs 23%; P = .003).
• PCOS was associated with increased odds of advanced maternal age at first childbirth (adjusted odds ratio [aOR], 1.34; 95% CI, 1.04-1.75) and higher rates of gestational diabetes (aOR, 3.90; 95% CI, 2.99-5.10).
• Late PCOS diagnosis was linked to increased odds of advanced maternal age at first childbirth (aOR, 1.98; 95% CI, 1.22-3.22), emphasizing the importance of early diagnosis.
• Compared with women without PCOS, those with PCOS were older at first childbirth (28.8 ± 5.5 vs 29.5 ± 5.5 years) and second childbirth (31.1 ± 5.0 vs 32.1 ± 5.2 years) (P < .001 for both).

IN PRACTICE:

“Women with PCOS have increased infertility and have higher rates of seeking and using ovulation induction and IVF than those without PCOS. Moreover, women with PCOS are older at both first and second childbirth, have longer interconception periods, are of advanced maternal age, and have higher nulliparity and lower fecundity compared with women without PCOS,” the authors of the study wrote.

SOURCE:

This study was led by Maria Forslund, MD, PhD, Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg in Sweden. It was published online in American Journal of Obstetrics & Gynecology.

LIMITATIONS:

This study relied on self-reported PCOS diagnosis, though these data were previously validated in the cohort. While dropouts from the study were common, a previous modeling study showed no serious bias in estimates of associations between risk factors and health outcomes in the longitudinal models.

DISCLOSURES:

Forslund received support from the Swedish Medical Society (SLS-984944; SLS986952). The study was funded by the Australian Government’s Department of Health and Aged Care. Additional disclosures are noted in the original article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article first appeared on Medscape.com.

TOPLINE:

Women with polycystic ovary syndrome (PCOS) have 26% higher nulliparity rates and give birth at more advanced ages despite similar family aspirations and higher rates of fertility treatment. Later PCOS diagnosis is associated with double the rate of advanced maternal age at childbirth.

METHODOLOGY:

• A prospective cohort study followed 14,247 Australian women from 1996 (age, 18-23 years) to 2021 (age, 43-48 years), comparing 981 women with self-reported PCOS against 13,266 without PCOS.
• Participants completed surveys approximately every 3 years, with data collection including childbirth events, fertility issues, and treatment history from 20 weeks of gestational age, including stillbirths.
• Analysis focused on comparing parity, maternal age at deliveries, and factors associated with advanced maternal age between groups, with adjustments made for education level, area of residence, marital status, body mass index group, hypertension, and type 2 diabetes.

TAKEAWAY:

• Compared with women without PCOS, those with PCOS had fewer births (1.9 ± 1.2 vs 1.7 ± 1.3; P < .001) and higher nulliparity rates (18% vs 23%; P = .003).
• PCOS was associated with increased odds of advanced maternal age at first childbirth (adjusted odds ratio [aOR], 1.34; 95% CI, 1.04-1.75) and higher rates of gestational diabetes (aOR, 3.90; 95% CI, 2.99-5.10).
• Late PCOS diagnosis was linked to increased odds of advanced maternal age at first childbirth (aOR, 1.98; 95% CI, 1.22-3.22), emphasizing the importance of early diagnosis.
• Compared with women without PCOS, those with PCOS were older at first childbirth (28.8 ± 5.5 vs 29.5 ± 5.5 years) and second childbirth (31.1 ± 5.0 vs 32.1 ± 5.2 years) (P < .001 for both).

IN PRACTICE:

“Women with PCOS have increased infertility and have higher rates of seeking and using ovulation induction and IVF than those without PCOS. Moreover, women with PCOS are older at both first and second childbirth, have longer interconception periods, are of advanced maternal age, and have higher nulliparity and lower fecundity compared with women without PCOS,” the authors of the study wrote.

SOURCE:

This study was led by Maria Forslund, MD, PhD, Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg in Sweden. It was published online in American Journal of Obstetrics & Gynecology.

LIMITATIONS:

This study relied on self-reported PCOS diagnosis, though these data were previously validated in the cohort. While dropouts from the study were common, a previous modeling study showed no serious bias in estimates of associations between risk factors and health outcomes in the longitudinal models.

DISCLOSURES:

Forslund received support from the Swedish Medical Society (SLS-984944; SLS986952). The study was funded by the Australian Government’s Department of Health and Aged Care. Additional disclosures are noted in the original article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article first appeared on Medscape.com.

TOPLINE:

Women with polycystic ovary syndrome (PCOS) have 26% higher nulliparity rates and give birth at more advanced ages despite similar family aspirations and higher rates of fertility treatment. Later PCOS diagnosis is associated with double the rate of advanced maternal age at childbirth.

METHODOLOGY:

• A prospective cohort study followed 14,247 Australian women from 1996 (age, 18-23 years) to 2021 (age, 43-48 years), comparing 981 women with self-reported PCOS against 13,266 without PCOS.
• Participants completed surveys approximately every 3 years, with data collection including childbirth events, fertility issues, and treatment history from 20 weeks of gestational age, including stillbirths.
• Analysis focused on comparing parity, maternal age at deliveries, and factors associated with advanced maternal age between groups, with adjustments made for education level, area of residence, marital status, body mass index group, hypertension, and type 2 diabetes.

TAKEAWAY:

• Compared with women without PCOS, those with PCOS had fewer births (1.9 ± 1.2 vs 1.7 ± 1.3; P < .001) and higher nulliparity rates (18% vs 23%; P = .003).
• PCOS was associated with increased odds of advanced maternal age at first childbirth (adjusted odds ratio [aOR], 1.34; 95% CI, 1.04-1.75) and higher rates of gestational diabetes (aOR, 3.90; 95% CI, 2.99-5.10).
• Late PCOS diagnosis was linked to increased odds of advanced maternal age at first childbirth (aOR, 1.98; 95% CI, 1.22-3.22), emphasizing the importance of early diagnosis.
• Compared with women without PCOS, those with PCOS were older at first childbirth (28.8 ± 5.5 vs 29.5 ± 5.5 years) and second childbirth (31.1 ± 5.0 vs 32.1 ± 5.2 years) (P < .001 for both).

IN PRACTICE:

“Women with PCOS have increased infertility and have higher rates of seeking and using ovulation induction and IVF than those without PCOS. Moreover, women with PCOS are older at both first and second childbirth, have longer interconception periods, are of advanced maternal age, and have higher nulliparity and lower fecundity compared with women without PCOS,” the authors of the study wrote.

SOURCE:

This study was led by Maria Forslund, MD, PhD, Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg in Sweden. It was published online in American Journal of Obstetrics & Gynecology.

LIMITATIONS:

This study relied on self-reported PCOS diagnosis, though these data were previously validated in the cohort. While dropouts from the study were common, a previous modeling study showed no serious bias in estimates of associations between risk factors and health outcomes in the longitudinal models.

DISCLOSURES:

Forslund received support from the Swedish Medical Society (SLS-984944; SLS986952). The study was funded by the Australian Government’s Department of Health and Aged Care. Additional disclosures are noted in the original article.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

A version of this article first appeared on Medscape.com.

TOPLINE:

Supplementation with vitamin D and calcium can reduce systolic and diastolic blood pressure in older individuals with overweight, particularly in those with a body mass index (BMI) > 30 and those diagnosed with hypertension.

METHODOLOGY:

• Large cohort data have provided epidemiologic evidence linking vitamin D deficiency to a higher risk for cardiovascular disorders, including hypertension; however, evidence on the beneficial effects of vitamin D supplementation on blood pressure outcomes remains inconclusive.
• A post hoc analysis of a randomized controlled trial was conducted to investigate the effect of two doses of cholecalciferol (vitamin D3) on blood pressure in individuals aged 65 years or older with a BMI > 25 and serum vitamin D levels of 10-30 ng/mL.
• A total of 221 participants were recruited through outpatient departments, clinics, and advertisements in the greater Beirut area and received calcium supplementation in combination with either a low dose (600 IU/d, as recommended by the Institute of Medicine [IOM]) or a high dose (3750 IU/d) of vitamin D3.
• Blood pressure measurements were taken at baseline, 6 months, and 12 months using a SureSigns VS3 monitor.
• Participants were also stratified by BMI and hypertension status to assess the effects of vitamin D and calcium on blood pressure.

TAKEAWAY:

• Systolic and diastolic blood pressures were significantly reduced with vitamin D supplementation in the overall cohort (mean difference, 3.5 and 2.8 mm Hg, respectively; P = .005 and P = .002, respectively), with the effect more prominent in those in the high-dose vitamin D group.
• Participants with a BMI > 30 experienced reductions in both systolic and diastolic blood pressures in the overall cohort (P < .0001 and P = .01, respectively); although the systolic blood pressure was significantly reduced with both high- and low-dose vitamin D, the diastolic blood pressure decreased in the high-dose group only.
• Patients with hypertension benefited from all doses of vitamin D, regardless of the BMI.
• Systolic blood pressure at 6 and 12 months was significantly predicted by BMI and baseline systolic blood pressure measurements, although not by the dose of vitamin D received.

IN PRACTICE:

“Our study found vitamin D supplementation may decrease blood pressure in specific subgroups such as older people, people with obesity, and possibly those with low vitamin D levels,” said study author Ghada El-Hajj Fuleihan, MD, MPH, of the American University of Beirut Medical Center in Beirut, Lebanon, said in a news release. “High vitamin D doses compared to the IOM’s recommended daily dose did not provide additional health benefits.”

SOURCE:

This study was led by Maya Rahme, Department of Internal Medicine, Division of Endocrinology, Calcium Metabolism and Osteoporosis Program, World Health Organization Collaborating Center for Metabolic Bone Disorders, American University of Beirut Medical Center in Beirut, Lebanon. It was published online in Journal of the Endocrine Society.

LIMITATIONS:

This study’s limitations included the exploratory nature of the analyses and the low power of the subgroup analyses. Additionally, the study focused on older individuals who were sedentary and had overweight, many of whom had prediabetes — conditions known to influence blood pressure. The possible effect of calcium alone on blood pressure reduction was also unclear.

DISCLOSURES:

This study was supported by grants from the American University of Beirut, St Joseph University, and the Lebanese Council for National Scientific Research. No relevant conflicts of interest were disclosed by the authors.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

 

A version of this article appeared on Medscape.com.

TOPLINE:

Supplementation with vitamin D and calcium can reduce systolic and diastolic blood pressure in older individuals with overweight, particularly in those with a body mass index (BMI) > 30 and those diagnosed with hypertension.

METHODOLOGY:

• Large cohort data have provided epidemiologic evidence linking vitamin D deficiency to a higher risk for cardiovascular disorders, including hypertension; however, evidence on the beneficial effects of vitamin D supplementation on blood pressure outcomes remains inconclusive.
• A post hoc analysis of a randomized controlled trial was conducted to investigate the effect of two doses of cholecalciferol (vitamin D3) on blood pressure in individuals aged 65 years or older with a BMI > 25 and serum vitamin D levels of 10-30 ng/mL.
• A total of 221 participants were recruited through outpatient departments, clinics, and advertisements in the greater Beirut area and received calcium supplementation in combination with either a low dose (600 IU/d, as recommended by the Institute of Medicine [IOM]) or a high dose (3750 IU/d) of vitamin D3.
• Blood pressure measurements were taken at baseline, 6 months, and 12 months using a SureSigns VS3 monitor.
• Participants were also stratified by BMI and hypertension status to assess the effects of vitamin D and calcium on blood pressure.

TAKEAWAY:

• Systolic and diastolic blood pressures were significantly reduced with vitamin D supplementation in the overall cohort (mean difference, 3.5 and 2.8 mm Hg, respectively; P = .005 and P = .002, respectively), with the effect more prominent in those in the high-dose vitamin D group.
• Participants with a BMI > 30 experienced reductions in both systolic and diastolic blood pressures in the overall cohort (P < .0001 and P = .01, respectively); although the systolic blood pressure was significantly reduced with both high- and low-dose vitamin D, the diastolic blood pressure decreased in the high-dose group only.
• Patients with hypertension benefited from all doses of vitamin D, regardless of the BMI.
• Systolic blood pressure at 6 and 12 months was significantly predicted by BMI and baseline systolic blood pressure measurements, although not by the dose of vitamin D received.

IN PRACTICE:

“Our study found vitamin D supplementation may decrease blood pressure in specific subgroups such as older people, people with obesity, and possibly those with low vitamin D levels,” said study author Ghada El-Hajj Fuleihan, MD, MPH, of the American University of Beirut Medical Center in Beirut, Lebanon, said in a news release. “High vitamin D doses compared to the IOM’s recommended daily dose did not provide additional health benefits.”

SOURCE:

This study was led by Maya Rahme, Department of Internal Medicine, Division of Endocrinology, Calcium Metabolism and Osteoporosis Program, World Health Organization Collaborating Center for Metabolic Bone Disorders, American University of Beirut Medical Center in Beirut, Lebanon. It was published online in Journal of the Endocrine Society.

LIMITATIONS:

This study’s limitations included the exploratory nature of the analyses and the low power of the subgroup analyses. Additionally, the study focused on older individuals who were sedentary and had overweight, many of whom had prediabetes — conditions known to influence blood pressure. The possible effect of calcium alone on blood pressure reduction was also unclear.

DISCLOSURES:

This study was supported by grants from the American University of Beirut, St Joseph University, and the Lebanese Council for National Scientific Research. No relevant conflicts of interest were disclosed by the authors.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

 

A version of this article appeared on Medscape.com.

TOPLINE:

Supplementation with vitamin D and calcium can reduce systolic and diastolic blood pressure in older individuals with overweight, particularly in those with a body mass index (BMI) > 30 and those diagnosed with hypertension.

METHODOLOGY:

• Large cohort data have provided epidemiologic evidence linking vitamin D deficiency to a higher risk for cardiovascular disorders, including hypertension; however, evidence on the beneficial effects of vitamin D supplementation on blood pressure outcomes remains inconclusive.
• A post hoc analysis of a randomized controlled trial was conducted to investigate the effect of two doses of cholecalciferol (vitamin D3) on blood pressure in individuals aged 65 years or older with a BMI > 25 and serum vitamin D levels of 10-30 ng/mL.
• A total of 221 participants were recruited through outpatient departments, clinics, and advertisements in the greater Beirut area and received calcium supplementation in combination with either a low dose (600 IU/d, as recommended by the Institute of Medicine [IOM]) or a high dose (3750 IU/d) of vitamin D3.
• Blood pressure measurements were taken at baseline, 6 months, and 12 months using a SureSigns VS3 monitor.
• Participants were also stratified by BMI and hypertension status to assess the effects of vitamin D and calcium on blood pressure.

TAKEAWAY:

• Systolic and diastolic blood pressures were significantly reduced with vitamin D supplementation in the overall cohort (mean difference, 3.5 and 2.8 mm Hg, respectively; P = .005 and P = .002, respectively), with the effect more prominent in those in the high-dose vitamin D group.
• Participants with a BMI > 30 experienced reductions in both systolic and diastolic blood pressures in the overall cohort (P < .0001 and P = .01, respectively); although the systolic blood pressure was significantly reduced with both high- and low-dose vitamin D, the diastolic blood pressure decreased in the high-dose group only.
• Patients with hypertension benefited from all doses of vitamin D, regardless of the BMI.
• Systolic blood pressure at 6 and 12 months was significantly predicted by BMI and baseline systolic blood pressure measurements, although not by the dose of vitamin D received.

IN PRACTICE:

“Our study found vitamin D supplementation may decrease blood pressure in specific subgroups such as older people, people with obesity, and possibly those with low vitamin D levels,” said study author Ghada El-Hajj Fuleihan, MD, MPH, of the American University of Beirut Medical Center in Beirut, Lebanon, said in a news release. “High vitamin D doses compared to the IOM’s recommended daily dose did not provide additional health benefits.”

SOURCE:

This study was led by Maya Rahme, Department of Internal Medicine, Division of Endocrinology, Calcium Metabolism and Osteoporosis Program, World Health Organization Collaborating Center for Metabolic Bone Disorders, American University of Beirut Medical Center in Beirut, Lebanon. It was published online in Journal of the Endocrine Society.

LIMITATIONS:

This study’s limitations included the exploratory nature of the analyses and the low power of the subgroup analyses. Additionally, the study focused on older individuals who were sedentary and had overweight, many of whom had prediabetes — conditions known to influence blood pressure. The possible effect of calcium alone on blood pressure reduction was also unclear.

DISCLOSURES:

This study was supported by grants from the American University of Beirut, St Joseph University, and the Lebanese Council for National Scientific Research. No relevant conflicts of interest were disclosed by the authors.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication.

 

A version of this article appeared on Medscape.com.

Overtreatment of men with prostate cancer and limited life expectancy (LE) has persisted in the era of active surveillance and worsened in some instances, according to a new study.

“Overtreatment of men with limited longevity for intermediate- and high-risk tumors has not only failed to improve but has actually worsened over the last 20 years,” Timothy Daskivich, MD, MSHPM, with Cedars-Sinai Medical Center, Los Angeles, said in an interview.

“Many doctors assume that the increase in uptake of active surveillance for low-risk prostate cancers has solved the problem of overtreatment, but this trend has not affected overtreatment of men with low likelihood of living long enough to benefit from treatment who have higher-risk tumors,” Daskivich said.

The study was published online on November 11 in JAMA Internal Medicine.

‘Concerning’ Real-World Data

For men with low- and intermediate-risk prostate cancer expected to live fewer than 10 years, prostate cancer screening and aggressive treatment are not recommended.

Daskivich and colleagues analyzed data on 243,928 men (mean age, 66 years) in the Veterans Affairs (VA) Health System with clinically localized prostate cancer diagnosed between 2000 and 2019.

About 21% had LE < 10 years, and about 4% had LE < 5 years, according to the validated age-adjusted Prostate Cancer Comorbidity Index.

Overtreatment was defined as aggressive treatment (surgery or radiation) in those with LE < 10 years and low- to intermediate-risk disease and in those with LE < 5 years and high-risk disease, in line with current guidelines.

Among men with LE < 10 years, the proportion of men overtreated with surgery or radiotherapy for low-risk disease decreased 22% but increased 22% for intermediate-risk disease during the study period.

Among men with LE < 5 years, the proportion of men treated with definitive treatment for high-risk disease increased 29%.

“While lower-risk tumors are treated less aggressively across the board, including in men with limited longevity, it seems that we are more indiscriminately treating men with higher-risk disease without considering their expected longevity,” Daskivich said in an interview.

 

Is This Happening in the General US Population?

Daskivich noted that the sample included a large sample of men diagnosed with localized prostate cancer in the VA Health System.

“Rates of overtreatment are likely to be lower in the VA [Health System], so the problem may be worse in the community setting. The VA [Health System] has been exemplary in its uptake of active surveillance for low-risk cancers, leading the effort to reduce overtreatment of men with low-risk cancers. However, the problem of overtreatment of men with limited longevity persists in the VA [Health System], underscoring the pervasiveness of this problem,” he explained.

“We don’t have a perfect head-to-head comparison of overtreatment in the VA setting vs in the community. [However, one study shows] that this is not a VA-specific phenomenon and that there is an increase in overtreatment of men with limited longevity in a Medicare population as well,” Daskivich noted.

 

Is Overtreatment All Bad?

Overtreatment of prostate cancer, especially in cases where the cancer is unlikely to progress or cause symptoms, can lead to significant physical, psychological, and financial harms, Christopher Anderson, MD, urologist with Columbia University Irving Medical Center in New York City, who wasn’t involved in the study, noted in an interview.

In the study by Daskivich and colleagues, over three quarters of the overtreatment was radiation therapy, which carries the risk for urinary, bowel, and sexual issues.

“Overscreening, which can lead to overtreatment, is a core issue,” Anderson said. It’s easy to order a “simple” prostate-specific antigen blood test, but in an older man with limited LE, that can lead to a host of further testing, he said.

Stopping the pipeline of overscreening that then feeds into the cascade of overtreatment is the first step in addressing the problem of prostate cancer overtreatment, Nancy Li Schoenborn, MD, MHS, with Johns Hopkins University School of Medicine, Baltimore, and Louise C. Walter, MD, with University of California San Francisco, wrote in an editorial in JAMA Internal Medicine.

Considering LE during screening decision-making is “fundamental to reducing harms of prostate cancer overdiagnosis and overtreatment” because limited LE increases the likelihood of experiencing “harms all along the diagnostic and treatment cascade following screening,” the editorial writers said.

The time spent diagnosing, monitoring, and treating asymptomatic prostate cancer in men with limited LE distracts from monitoring and treating chronic symptomatic life-limiting illnesses, they noted.

 

Tough to Talk About?

Anderson noted that, in general, doctors are not great at estimating and counseling patients on LE. “It’s sometimes difficult to have that conversation,” he said.

Daskivich said physicians may fail to include average LE when advising patients on treatments because they believe that the patients do not want to discuss this topic. “Yet, in interviews with patients, we found that prostate cancer patients reported they wanted this information,” he continued, in an interview.

Solving the problem of overscreening and overtreatment will require a “multifaceted approach, including improving access to life expectancy data at the point of care for providers, educating providers on how to communicate this information, and improving data sources to predict longevity,” Daskivich said.

He said it’s equally important to note that some men with prostate cancer may choose treatment even if they have a limited longevity.

“Not all patients will choose conservative management, even if it is recommended by guidelines. However, they need to be given the opportunity to make a good decision for themselves with the best possible data,” Daskivich said.

This work was supported in part by a US Department of VA Merit Review. Daskivich reported receiving personal fees from the Medical Education Speakers Network, EDAP, and RAND; research support from Lantheus and Janssen; and a patent pending for a system for healthcare visit quality assessment outside the submitted work. Schoenborn, Walter, and Anderson had no relevant disclosures.

 

A version of this article appeared on Medscape.com.

Overtreatment of men with prostate cancer and limited life expectancy (LE) has persisted in the era of active surveillance and worsened in some instances, according to a new study.

“Overtreatment of men with limited longevity for intermediate- and high-risk tumors has not only failed to improve but has actually worsened over the last 20 years,” Timothy Daskivich, MD, MSHPM, with Cedars-Sinai Medical Center, Los Angeles, said in an interview.

“Many doctors assume that the increase in uptake of active surveillance for low-risk prostate cancers has solved the problem of overtreatment, but this trend has not affected overtreatment of men with low likelihood of living long enough to benefit from treatment who have higher-risk tumors,” Daskivich said.

The study was published online on November 11 in JAMA Internal Medicine.

‘Concerning’ Real-World Data

For men with low- and intermediate-risk prostate cancer expected to live fewer than 10 years, prostate cancer screening and aggressive treatment are not recommended.

Daskivich and colleagues analyzed data on 243,928 men (mean age, 66 years) in the Veterans Affairs (VA) Health System with clinically localized prostate cancer diagnosed between 2000 and 2019.

About 21% had LE < 10 years, and about 4% had LE < 5 years, according to the validated age-adjusted Prostate Cancer Comorbidity Index.

Overtreatment was defined as aggressive treatment (surgery or radiation) in those with LE < 10 years and low- to intermediate-risk disease and in those with LE < 5 years and high-risk disease, in line with current guidelines.

Among men with LE < 10 years, the proportion of men overtreated with surgery or radiotherapy for low-risk disease decreased 22% but increased 22% for intermediate-risk disease during the study period.

Among men with LE < 5 years, the proportion of men treated with definitive treatment for high-risk disease increased 29%.

“While lower-risk tumors are treated less aggressively across the board, including in men with limited longevity, it seems that we are more indiscriminately treating men with higher-risk disease without considering their expected longevity,” Daskivich said in an interview.

 

Is This Happening in the General US Population?

Daskivich noted that the sample included a large sample of men diagnosed with localized prostate cancer in the VA Health System.

“Rates of overtreatment are likely to be lower in the VA [Health System], so the problem may be worse in the community setting. The VA [Health System] has been exemplary in its uptake of active surveillance for low-risk cancers, leading the effort to reduce overtreatment of men with low-risk cancers. However, the problem of overtreatment of men with limited longevity persists in the VA [Health System], underscoring the pervasiveness of this problem,” he explained.

“We don’t have a perfect head-to-head comparison of overtreatment in the VA setting vs in the community. [However, one study shows] that this is not a VA-specific phenomenon and that there is an increase in overtreatment of men with limited longevity in a Medicare population as well,” Daskivich noted.

 

Is Overtreatment All Bad?

Overtreatment of prostate cancer, especially in cases where the cancer is unlikely to progress or cause symptoms, can lead to significant physical, psychological, and financial harms, Christopher Anderson, MD, urologist with Columbia University Irving Medical Center in New York City, who wasn’t involved in the study, noted in an interview.

In the study by Daskivich and colleagues, over three quarters of the overtreatment was radiation therapy, which carries the risk for urinary, bowel, and sexual issues.

“Overscreening, which can lead to overtreatment, is a core issue,” Anderson said. It’s easy to order a “simple” prostate-specific antigen blood test, but in an older man with limited LE, that can lead to a host of further testing, he said.

Stopping the pipeline of overscreening that then feeds into the cascade of overtreatment is the first step in addressing the problem of prostate cancer overtreatment, Nancy Li Schoenborn, MD, MHS, with Johns Hopkins University School of Medicine, Baltimore, and Louise C. Walter, MD, with University of California San Francisco, wrote in an editorial in JAMA Internal Medicine.

Considering LE during screening decision-making is “fundamental to reducing harms of prostate cancer overdiagnosis and overtreatment” because limited LE increases the likelihood of experiencing “harms all along the diagnostic and treatment cascade following screening,” the editorial writers said.

The time spent diagnosing, monitoring, and treating asymptomatic prostate cancer in men with limited LE distracts from monitoring and treating chronic symptomatic life-limiting illnesses, they noted.

 

Tough to Talk About?

Anderson noted that, in general, doctors are not great at estimating and counseling patients on LE. “It’s sometimes difficult to have that conversation,” he said.

Daskivich said physicians may fail to include average LE when advising patients on treatments because they believe that the patients do not want to discuss this topic. “Yet, in interviews with patients, we found that prostate cancer patients reported they wanted this information,” he continued, in an interview.

Solving the problem of overscreening and overtreatment will require a “multifaceted approach, including improving access to life expectancy data at the point of care for providers, educating providers on how to communicate this information, and improving data sources to predict longevity,” Daskivich said.

He said it’s equally important to note that some men with prostate cancer may choose treatment even if they have a limited longevity.

“Not all patients will choose conservative management, even if it is recommended by guidelines. However, they need to be given the opportunity to make a good decision for themselves with the best possible data,” Daskivich said.

This work was supported in part by a US Department of VA Merit Review. Daskivich reported receiving personal fees from the Medical Education Speakers Network, EDAP, and RAND; research support from Lantheus and Janssen; and a patent pending for a system for healthcare visit quality assessment outside the submitted work. Schoenborn, Walter, and Anderson had no relevant disclosures.

 

A version of this article appeared on Medscape.com.

Overtreatment of men with prostate cancer and limited life expectancy (LE) has persisted in the era of active surveillance and worsened in some instances, according to a new study.

“Overtreatment of men with limited longevity for intermediate- and high-risk tumors has not only failed to improve but has actually worsened over the last 20 years,” Timothy Daskivich, MD, MSHPM, with Cedars-Sinai Medical Center, Los Angeles, said in an interview.

“Many doctors assume that the increase in uptake of active surveillance for low-risk prostate cancers has solved the problem of overtreatment, but this trend has not affected overtreatment of men with low likelihood of living long enough to benefit from treatment who have higher-risk tumors,” Daskivich said.

The study was published online on November 11 in JAMA Internal Medicine.

‘Concerning’ Real-World Data

For men with low- and intermediate-risk prostate cancer expected to live fewer than 10 years, prostate cancer screening and aggressive treatment are not recommended.

Daskivich and colleagues analyzed data on 243,928 men (mean age, 66 years) in the Veterans Affairs (VA) Health System with clinically localized prostate cancer diagnosed between 2000 and 2019.

About 21% had LE < 10 years, and about 4% had LE < 5 years, according to the validated age-adjusted Prostate Cancer Comorbidity Index.

Overtreatment was defined as aggressive treatment (surgery or radiation) in those with LE < 10 years and low- to intermediate-risk disease and in those with LE < 5 years and high-risk disease, in line with current guidelines.

Among men with LE < 10 years, the proportion of men overtreated with surgery or radiotherapy for low-risk disease decreased 22% but increased 22% for intermediate-risk disease during the study period.

Among men with LE < 5 years, the proportion of men treated with definitive treatment for high-risk disease increased 29%.

“While lower-risk tumors are treated less aggressively across the board, including in men with limited longevity, it seems that we are more indiscriminately treating men with higher-risk disease without considering their expected longevity,” Daskivich said in an interview.

 

Is This Happening in the General US Population?

Daskivich noted that the sample included a large sample of men diagnosed with localized prostate cancer in the VA Health System.

“Rates of overtreatment are likely to be lower in the VA [Health System], so the problem may be worse in the community setting. The VA [Health System] has been exemplary in its uptake of active surveillance for low-risk cancers, leading the effort to reduce overtreatment of men with low-risk cancers. However, the problem of overtreatment of men with limited longevity persists in the VA [Health System], underscoring the pervasiveness of this problem,” he explained.

“We don’t have a perfect head-to-head comparison of overtreatment in the VA setting vs in the community. [However, one study shows] that this is not a VA-specific phenomenon and that there is an increase in overtreatment of men with limited longevity in a Medicare population as well,” Daskivich noted.

 

Is Overtreatment All Bad?

Overtreatment of prostate cancer, especially in cases where the cancer is unlikely to progress or cause symptoms, can lead to significant physical, psychological, and financial harms, Christopher Anderson, MD, urologist with Columbia University Irving Medical Center in New York City, who wasn’t involved in the study, noted in an interview.

In the study by Daskivich and colleagues, over three quarters of the overtreatment was radiation therapy, which carries the risk for urinary, bowel, and sexual issues.

“Overscreening, which can lead to overtreatment, is a core issue,” Anderson said. It’s easy to order a “simple” prostate-specific antigen blood test, but in an older man with limited LE, that can lead to a host of further testing, he said.

Stopping the pipeline of overscreening that then feeds into the cascade of overtreatment is the first step in addressing the problem of prostate cancer overtreatment, Nancy Li Schoenborn, MD, MHS, with Johns Hopkins University School of Medicine, Baltimore, and Louise C. Walter, MD, with University of California San Francisco, wrote in an editorial in JAMA Internal Medicine.

Considering LE during screening decision-making is “fundamental to reducing harms of prostate cancer overdiagnosis and overtreatment” because limited LE increases the likelihood of experiencing “harms all along the diagnostic and treatment cascade following screening,” the editorial writers said.

The time spent diagnosing, monitoring, and treating asymptomatic prostate cancer in men with limited LE distracts from monitoring and treating chronic symptomatic life-limiting illnesses, they noted.

 

Tough to Talk About?

Anderson noted that, in general, doctors are not great at estimating and counseling patients on LE. “It’s sometimes difficult to have that conversation,” he said.

Daskivich said physicians may fail to include average LE when advising patients on treatments because they believe that the patients do not want to discuss this topic. “Yet, in interviews with patients, we found that prostate cancer patients reported they wanted this information,” he continued, in an interview.

Solving the problem of overscreening and overtreatment will require a “multifaceted approach, including improving access to life expectancy data at the point of care for providers, educating providers on how to communicate this information, and improving data sources to predict longevity,” Daskivich said.

He said it’s equally important to note that some men with prostate cancer may choose treatment even if they have a limited longevity.

“Not all patients will choose conservative management, even if it is recommended by guidelines. However, they need to be given the opportunity to make a good decision for themselves with the best possible data,” Daskivich said.

This work was supported in part by a US Department of VA Merit Review. Daskivich reported receiving personal fees from the Medical Education Speakers Network, EDAP, and RAND; research support from Lantheus and Janssen; and a patent pending for a system for healthcare visit quality assessment outside the submitted work. Schoenborn, Walter, and Anderson had no relevant disclosures.

 

A version of this article appeared on Medscape.com.

TOPLINE:

Novel first-generation cell-free DNA blood (cf-bDNA) tests for colorectal cancer (CRC) cost more and are less effective than colonoscopy or stool tests, a new analysis suggests.

METHODOLOGY:

• Researchers estimated the clinical and economic impacts of emerging blood- and stool-based CRC screening tests with established alternatives in average-risk adults aged 45 years and older.
• The established screening tools were colonoscopy, a fecal immunochemical test (FIT), and a multitarget stool DNA test (MT-sDNA, Exact Sciences Cologuard).
• The four emerging screening methods were two cf-bDNA tests (Guardant Shield and Freenome); an enhanced, a next-generation multitarget stool test (ngMT-sDNA), and a novel FIT-RNA test (Geneoscopy ColoSense).

TAKEAWAY:

• Assuming 100% participation in all screening steps, colonoscopy and FIT yielded reductions of more than 70% in CRC incidence and 75% in mortality vs no screening.
• The MT-sDNA test reduced CRC incidence by 68% and mortality by 73%, with similar rates for the ngMT-sDNA and FIT-RNA tests vs no screening. The cf-bDNA tests yielded CRC incidence and mortality reductions of only 42% and 56%.
• Colonoscopy and FIT were more effective and less costly than the cf-bDNA and MT-sDNA tests, and the MT-sDNA test was more effective and less costly than the cf-bDNA test.
• Population benefits from blood tests were seen only in those who declined colonoscopy and stool tests. Substituting a blood test for those already using colonoscopy or stool tests led to worse population-level outcomes.

IN PRACTICE:

“First-generation novel cf-bDNA tests have the potential to decrease meaningfully the incidence and mortality of CRC compared with no screening but substantially less profoundly than screening colonoscopy or stool tests. Net population benefit or harm can follow incorporation of first-generation cf-bDNA CRC screening tests into practice, depending on the balance between bringing unscreened persons into screening (addition) vs shifting persons away from the more effective strategies of colonoscopy or stool testing (substitution),” the authors concluded.

SOURCE:

The study, with first author Uri Ladabaum, MD, MS, Stanford University School of Medicine, California, was published online in Annals of Internal Medicine.

LIMITATIONS:

Limitations included test-specific participation patterns being unknown over time. 

DISCLOSURES:

Disclosure forms for the authors are available with the article online. Funding was provided by the Gorrindo Family Fund.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Novel first-generation cell-free DNA blood (cf-bDNA) tests for colorectal cancer (CRC) cost more and are less effective than colonoscopy or stool tests, a new analysis suggests.

METHODOLOGY:

• Researchers estimated the clinical and economic impacts of emerging blood- and stool-based CRC screening tests with established alternatives in average-risk adults aged 45 years and older.
• The established screening tools were colonoscopy, a fecal immunochemical test (FIT), and a multitarget stool DNA test (MT-sDNA, Exact Sciences Cologuard).
• The four emerging screening methods were two cf-bDNA tests (Guardant Shield and Freenome); an enhanced, a next-generation multitarget stool test (ngMT-sDNA), and a novel FIT-RNA test (Geneoscopy ColoSense).

TAKEAWAY:

• Assuming 100% participation in all screening steps, colonoscopy and FIT yielded reductions of more than 70% in CRC incidence and 75% in mortality vs no screening.
• The MT-sDNA test reduced CRC incidence by 68% and mortality by 73%, with similar rates for the ngMT-sDNA and FIT-RNA tests vs no screening. The cf-bDNA tests yielded CRC incidence and mortality reductions of only 42% and 56%.
• Colonoscopy and FIT were more effective and less costly than the cf-bDNA and MT-sDNA tests, and the MT-sDNA test was more effective and less costly than the cf-bDNA test.
• Population benefits from blood tests were seen only in those who declined colonoscopy and stool tests. Substituting a blood test for those already using colonoscopy or stool tests led to worse population-level outcomes.

IN PRACTICE:

“First-generation novel cf-bDNA tests have the potential to decrease meaningfully the incidence and mortality of CRC compared with no screening but substantially less profoundly than screening colonoscopy or stool tests. Net population benefit or harm can follow incorporation of first-generation cf-bDNA CRC screening tests into practice, depending on the balance between bringing unscreened persons into screening (addition) vs shifting persons away from the more effective strategies of colonoscopy or stool testing (substitution),” the authors concluded.

SOURCE:

The study, with first author Uri Ladabaum, MD, MS, Stanford University School of Medicine, California, was published online in Annals of Internal Medicine.

LIMITATIONS:

Limitations included test-specific participation patterns being unknown over time. 

DISCLOSURES:

Disclosure forms for the authors are available with the article online. Funding was provided by the Gorrindo Family Fund.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Novel first-generation cell-free DNA blood (cf-bDNA) tests for colorectal cancer (CRC) cost more and are less effective than colonoscopy or stool tests, a new analysis suggests.

METHODOLOGY:

• Researchers estimated the clinical and economic impacts of emerging blood- and stool-based CRC screening tests with established alternatives in average-risk adults aged 45 years and older.
• The established screening tools were colonoscopy, a fecal immunochemical test (FIT), and a multitarget stool DNA test (MT-sDNA, Exact Sciences Cologuard).
• The four emerging screening methods were two cf-bDNA tests (Guardant Shield and Freenome); an enhanced, a next-generation multitarget stool test (ngMT-sDNA), and a novel FIT-RNA test (Geneoscopy ColoSense).

TAKEAWAY:

• Assuming 100% participation in all screening steps, colonoscopy and FIT yielded reductions of more than 70% in CRC incidence and 75% in mortality vs no screening.
• The MT-sDNA test reduced CRC incidence by 68% and mortality by 73%, with similar rates for the ngMT-sDNA and FIT-RNA tests vs no screening. The cf-bDNA tests yielded CRC incidence and mortality reductions of only 42% and 56%.
• Colonoscopy and FIT were more effective and less costly than the cf-bDNA and MT-sDNA tests, and the MT-sDNA test was more effective and less costly than the cf-bDNA test.
• Population benefits from blood tests were seen only in those who declined colonoscopy and stool tests. Substituting a blood test for those already using colonoscopy or stool tests led to worse population-level outcomes.

IN PRACTICE:

“First-generation novel cf-bDNA tests have the potential to decrease meaningfully the incidence and mortality of CRC compared with no screening but substantially less profoundly than screening colonoscopy or stool tests. Net population benefit or harm can follow incorporation of first-generation cf-bDNA CRC screening tests into practice, depending on the balance between bringing unscreened persons into screening (addition) vs shifting persons away from the more effective strategies of colonoscopy or stool testing (substitution),” the authors concluded.

SOURCE:

The study, with first author Uri Ladabaum, MD, MS, Stanford University School of Medicine, California, was published online in Annals of Internal Medicine.

LIMITATIONS:

Limitations included test-specific participation patterns being unknown over time. 

DISCLOSURES:

Disclosure forms for the authors are available with the article online. Funding was provided by the Gorrindo Family Fund.
 

A version of this article appeared on Medscape.com.

New recommendations on rescuing adults and children who have drowned include an important update for healthcare professionals, trained rescuers, and untrained lay rescuers. 

The American Heart Association (AHA) and the American Academy of Pediatrics (AAP) have issued recommendations that highlight delivering rescue breaths as well as calling 911 and performing chest compressions in cardiopulmonary resuscitation (CPR) as first steps when a person pulled from the water is in cardiac arrest.

This is the first collaboration between the two organizations on resuscitation after drowning. The recommendations were published simultaneously in Circulation and Pediatrics.

Included in the recommendations are two key principles:

• Anyone pulled from the water who has no signs of normal breathing or consciousness should be presumed to be in cardiac arrest.
• Rescuers should immediately start CPR that includes rescue breathing in addition to chest compressions. Multiple large studies show more people with cardiac arrest from noncardiac causes such as drowning survive when CPR includes rescue breaths, compared with hands-only CPR (calling 911 and pushing hard and fast in the center of the chest).

If someone is untrained, unwilling, or unable to give breaths, they can perform chest compressions until help arrives, the recommendations advise.

 

Reasoning Behind the Update

The authors, led by writing group cochair Tracy E. McCallin, MD, associate professor in the division of pediatric emergency medicine at Rainbow Babies and Children’s Hospital in Cleveland , Ohio, explained that drowning generally advances from initial respiratory arrest from submersion-related hypoxia to cardiac arrest, and therefore it can be difficult to distinguish respiratory arrest from cardiac arrest because pulses are difficult to accurately palpate within the recommended 10-second window.

“Therefore, resuscitation from cardiac arrest due to this specific circumstance must focus on restoring breathing as much as it does circulation,” the authors wrote.

Resuscitation after drowning may begin in the water with rescue breathing when safely provided by trained rescuers and should continue with chest compressions, once the drowned person and the rescuer are on land or in a boat, the report authors wrote.

“The focused update on drowning contains the most up-to-date, evidence-based recommendations on how to resuscitate someone who has drowned,” McCallin states in a press release.

In addition to the new guidance on rescue breaths, the update includes new topics that the AHA has not previously addressed with treatment recommendations, such as oxygen administration after drowning; automated external defibrillator use in cardiac arrest after drowning and public-access defibrillation programs.

 

Pediatricians Can Help Spread the Word

Alexandra Stern, MD, assistant professor in the Department of Pediatrics at University of Florida, Gainesville, who was not part of the update, said pediatricians can help disseminate this new information.

“Water safety is a topic frequently discussed as a pediatrician, with focus often being on primary prevention of drowning,” she said. “We stress the importance of the multiple layers of protection against drowning, such as touch supervision (staying within arm’s length); secure fencing, access to appropriate life jackets, and teaching our children to swim. Learning CPR is a large part of these measures and continuing these discussions with our patients and families is important.”

She added that updating the recommended procedures will likely require changes to all forms of education and community outreach regarding drowning from basic life support classes to more advanced lifeguard training. She noted that the update provides practical guidance not just for trained rescuers and healthcare professionals, but also for family members. 

The paper notes that drowning is the third leading cause of death from unintentional injury globally, accounting for 7% of all injury-related deaths. In the United States, drowning is the leading cause of death in children aged 1-4 years and the second leading cause of death from unintentional injury in children aged 5-14 years.

The update is based on systematic reviews from 2021 to 2023 performed by the International Liaison Committee on Resuscitation related to the resuscitation of drowning.

The authors and Stern reported no relevant financial relationships.

A version of this article appeared on Medscape.com.

New recommendations on rescuing adults and children who have drowned include an important update for healthcare professionals, trained rescuers, and untrained lay rescuers. 

The American Heart Association (AHA) and the American Academy of Pediatrics (AAP) have issued recommendations that highlight delivering rescue breaths as well as calling 911 and performing chest compressions in cardiopulmonary resuscitation (CPR) as first steps when a person pulled from the water is in cardiac arrest.

This is the first collaboration between the two organizations on resuscitation after drowning. The recommendations were published simultaneously in Circulation and Pediatrics.

Included in the recommendations are two key principles:

• Anyone pulled from the water who has no signs of normal breathing or consciousness should be presumed to be in cardiac arrest.
• Rescuers should immediately start CPR that includes rescue breathing in addition to chest compressions. Multiple large studies show more people with cardiac arrest from noncardiac causes such as drowning survive when CPR includes rescue breaths, compared with hands-only CPR (calling 911 and pushing hard and fast in the center of the chest).

If someone is untrained, unwilling, or unable to give breaths, they can perform chest compressions until help arrives, the recommendations advise.

 

Reasoning Behind the Update

The authors, led by writing group cochair Tracy E. McCallin, MD, associate professor in the division of pediatric emergency medicine at Rainbow Babies and Children’s Hospital in Cleveland , Ohio, explained that drowning generally advances from initial respiratory arrest from submersion-related hypoxia to cardiac arrest, and therefore it can be difficult to distinguish respiratory arrest from cardiac arrest because pulses are difficult to accurately palpate within the recommended 10-second window.

“Therefore, resuscitation from cardiac arrest due to this specific circumstance must focus on restoring breathing as much as it does circulation,” the authors wrote.

Resuscitation after drowning may begin in the water with rescue breathing when safely provided by trained rescuers and should continue with chest compressions, once the drowned person and the rescuer are on land or in a boat, the report authors wrote.

“The focused update on drowning contains the most up-to-date, evidence-based recommendations on how to resuscitate someone who has drowned,” McCallin states in a press release.

In addition to the new guidance on rescue breaths, the update includes new topics that the AHA has not previously addressed with treatment recommendations, such as oxygen administration after drowning; automated external defibrillator use in cardiac arrest after drowning and public-access defibrillation programs.

 

Pediatricians Can Help Spread the Word

Alexandra Stern, MD, assistant professor in the Department of Pediatrics at University of Florida, Gainesville, who was not part of the update, said pediatricians can help disseminate this new information.

“Water safety is a topic frequently discussed as a pediatrician, with focus often being on primary prevention of drowning,” she said. “We stress the importance of the multiple layers of protection against drowning, such as touch supervision (staying within arm’s length); secure fencing, access to appropriate life jackets, and teaching our children to swim. Learning CPR is a large part of these measures and continuing these discussions with our patients and families is important.”

She added that updating the recommended procedures will likely require changes to all forms of education and community outreach regarding drowning from basic life support classes to more advanced lifeguard training. She noted that the update provides practical guidance not just for trained rescuers and healthcare professionals, but also for family members. 

The paper notes that drowning is the third leading cause of death from unintentional injury globally, accounting for 7% of all injury-related deaths. In the United States, drowning is the leading cause of death in children aged 1-4 years and the second leading cause of death from unintentional injury in children aged 5-14 years.

The update is based on systematic reviews from 2021 to 2023 performed by the International Liaison Committee on Resuscitation related to the resuscitation of drowning.

The authors and Stern reported no relevant financial relationships.

A version of this article appeared on Medscape.com.

New recommendations on rescuing adults and children who have drowned include an important update for healthcare professionals, trained rescuers, and untrained lay rescuers. 

The American Heart Association (AHA) and the American Academy of Pediatrics (AAP) have issued recommendations that highlight delivering rescue breaths as well as calling 911 and performing chest compressions in cardiopulmonary resuscitation (CPR) as first steps when a person pulled from the water is in cardiac arrest.

This is the first collaboration between the two organizations on resuscitation after drowning. The recommendations were published simultaneously in Circulation and Pediatrics.

Included in the recommendations are two key principles:

• Anyone pulled from the water who has no signs of normal breathing or consciousness should be presumed to be in cardiac arrest.
• Rescuers should immediately start CPR that includes rescue breathing in addition to chest compressions. Multiple large studies show more people with cardiac arrest from noncardiac causes such as drowning survive when CPR includes rescue breaths, compared with hands-only CPR (calling 911 and pushing hard and fast in the center of the chest).

If someone is untrained, unwilling, or unable to give breaths, they can perform chest compressions until help arrives, the recommendations advise.

 

Reasoning Behind the Update

The authors, led by writing group cochair Tracy E. McCallin, MD, associate professor in the division of pediatric emergency medicine at Rainbow Babies and Children’s Hospital in Cleveland , Ohio, explained that drowning generally advances from initial respiratory arrest from submersion-related hypoxia to cardiac arrest, and therefore it can be difficult to distinguish respiratory arrest from cardiac arrest because pulses are difficult to accurately palpate within the recommended 10-second window.

“Therefore, resuscitation from cardiac arrest due to this specific circumstance must focus on restoring breathing as much as it does circulation,” the authors wrote.

Resuscitation after drowning may begin in the water with rescue breathing when safely provided by trained rescuers and should continue with chest compressions, once the drowned person and the rescuer are on land or in a boat, the report authors wrote.

“The focused update on drowning contains the most up-to-date, evidence-based recommendations on how to resuscitate someone who has drowned,” McCallin states in a press release.

In addition to the new guidance on rescue breaths, the update includes new topics that the AHA has not previously addressed with treatment recommendations, such as oxygen administration after drowning; automated external defibrillator use in cardiac arrest after drowning and public-access defibrillation programs.

 

Pediatricians Can Help Spread the Word

Alexandra Stern, MD, assistant professor in the Department of Pediatrics at University of Florida, Gainesville, who was not part of the update, said pediatricians can help disseminate this new information.

“Water safety is a topic frequently discussed as a pediatrician, with focus often being on primary prevention of drowning,” she said. “We stress the importance of the multiple layers of protection against drowning, such as touch supervision (staying within arm’s length); secure fencing, access to appropriate life jackets, and teaching our children to swim. Learning CPR is a large part of these measures and continuing these discussions with our patients and families is important.”

She added that updating the recommended procedures will likely require changes to all forms of education and community outreach regarding drowning from basic life support classes to more advanced lifeguard training. She noted that the update provides practical guidance not just for trained rescuers and healthcare professionals, but also for family members. 

The paper notes that drowning is the third leading cause of death from unintentional injury globally, accounting for 7% of all injury-related deaths. In the United States, drowning is the leading cause of death in children aged 1-4 years and the second leading cause of death from unintentional injury in children aged 5-14 years.

The update is based on systematic reviews from 2021 to 2023 performed by the International Liaison Committee on Resuscitation related to the resuscitation of drowning.

The authors and Stern reported no relevant financial relationships.

A version of this article appeared on Medscape.com.

New recommendations from the WikiGuidelines Group offer strategies for the prevention, diagnosis, and management of urinary tract infections (UTIs) in children and adults.

While the guideline covers a range of clinical topics, including prophylaxis and antimicrobial stewardship, many key clinical questions remain unanswered because of a lack of high-quality evidence, according to lead author Zachary Nelson, PharmD, MPH, of HealthPartners and Park Nicollet Health Services, St. Louis Park, Minnesota, and colleagues.

“This guideline fills a critical gap by providing pragmatic, broadly applicable recommendations tailored for generalist care and systems-based practice,” Nelson and colleagues wrote in JAMA Network Open. “Our guidance is rooted in the best available evidence and is designed for clinicians from various backgrounds and healthcare environments. It emphasizes a patient-centered approach to the diagnosis, prevention, and treatment of UTIs and related genitourinary infections.”

The guideline panelists, including 54 experts from 12 countries, developed the document in accordance with Standards for Quality Improvement Reporting Excellence and the WikiGuidelines charter. The latter requires that “clear recommendations” are based on data from at least two concordant randomized clinical trials (RCTs), or one RCT plus one concordant prospective observational study.

This approach allowed the panel to provide clear recommendations for 6 out of 37 unique questions, while 3 other questions were partially answered. In other words, 75% of the questions lacked sufficient evidence for answers.

“These guidelines are important because they illuminate the clinical data and lack of data we have for approaching diagnosis and treatment of this common infection that leads to a wide array of morbidity and sometimes mortality, as well as significant cost burden to the healthcare system,” said coauthor Sarah Kurz, MD, clinical assistant professor of internal medicine at Michigan Medicine, Ann Arbor, in a written comment.

Jessica Hammett, MD, a urologist at Emory Healthcare, Atlanta, Georgia, who was not an author of the study, suggested that the guideline is additionally impactful because of the panel’s geographic diversity.

“It is an international collaboration that takes into account regional and international practice patterns and differences,” Hammett said in a written comment.

The key guideline recommendations are briefly summarized below.

Preventive Strategies for UTI

The guideline endorses cranberry products as preventive for UTI-prone women, children, and post-intervention patients, though data are insufficient to recommend them for older adults, those with bladder issues, or pregnant women.

Topical estrogen is recommended for postmenopausal women with recurrent UTIs, as it helps restore the vaginal microbiome with minimal systemic absorption. It may also benefit patients with breast cancer when nonhormonal alternatives fail.

For those with intact bladder anatomy, methenamine hippurate is suggested as a noninferior alternative to low-dose antibiotics for preventing recurrent UTIs.

“These findings confirm the best practice of starting postmenopausal women on vaginal estrogen to prevent UTIs, which is a treatment option that should be implemented more commonly,” Hammett said. “Interestingly as compared to the AUA guidelines, this paper recommends the use of cranberry supplementation and methenamine as antibiotic alternatives for preventing UTIs.”

 

Empirical Treatment Recommendations

According to the guideline, empirical treatment for UTIs should focus on antimicrobials with high urinary tract concentration and local pathogen efficacy.

Nitrofurantoin is recommended for uncomplicated cystitis, while trimethoprim/sulfamethoxazole (TMP/SMX) and first-generation cephalosporins are advised for pyelonephritis.

For intravenous therapy, ceftriaxone is preferred unless there are risk factors for multidrug resistance.

Recommended treatment durations include 5 days for nitrofurantoin, 3 days for TMP/SMX and fluoroquinolones, and a single dose for fosfomycin in acute cystitis cases. For acute pyelonephritis, fluoroquinolones are advised for 5-7 days, with dose-optimized beta-lactams for 7 days. Gram-negative bacteremia from urinary sources warrants a 7-day course.

 

Stewardship and Clinical Management

The guideline emphasizes antimicrobial stewardship, with support for antibiotic de-escalation and oral regimens where feasible, to reduce adverse effects and hospital stays. Although evidence is limited, the authors suggest thorough allergy assessment and selective reporting of susceptibility results to enhance antibiotic selection.

While data were insufficient to make clear recommendations about the treatment of asymptomatic bacteriuria, Nelson and colleagues suggested that this practice “risks side effects without benefit” while threatening antimicrobial sustainability.

Hammett agreed, noting that “[this] serves as an important reminder not to treat asymptomatic bacteriuria, as it increases side effects and bacterial resistance without any improvement as compared to placebo.”

 

Special Considerations for Urologic Procedures

Finally, patients undergoing urologic procedures, routine cystoscopy, and urodynamic studies generally do not require prophylactic antibiotics, according to the guideline. Single-dose antibiotic prophylaxis is recommended for low-risk nephrolithotomy patients, though high-risk individuals, such as those who are pregnant or post kidney transplant, may require extended prophylaxis.

Kurz suggested that the guideline consolidates and supports the foundation of evidence driving common practices.

“I don’t think these guidelines offer any strikingly new strategies, which is unsurprising, as they were created after a deep dive into existing literature,” Kurz said. “But more importantly, what I think they do is to highlight where and what the evidence is for many of the clinical strategies that are commonly employed. For example, in terms of prevention, it is common for primary care physicians, urologists, and infectious diseases doctors to recommend cranberry and hydration and to use methenamine. These guidelines highlight that there is sufficient quality and quantity of evidence to support these interventions.”

She also noted how the guidelines emphasize the need for symptoms to make a UTI diagnosis and advise against routine testing of asymptomatic individuals.

“Despite this not being new information, typical clinical practice is often out of step here, and this [guideline] reemphasizes the important factors when considering UTI diagnosis,” Kurz said.

Finally, she expressed frustration for the numerous knowledge gaps remaining in this area, which may be traced back to barriers ranging from the semantic to the more systemic.

“Some of the difficulty is lack of clear definitions and precise terminology regarding UTIs,” Kurz said, noting the unclear distinction between complicated and uncomplicated UTIs. “I would also argue that UTIs are a disease that predominantly affects women, and like many other diseases where this is the case, [they] tend to be less studied. Hopefully, this guideline’s spotlight on all that we do not know can inspire high-quality research to address these gaps, leading to optimal patient care along with decreased burden on the system as a whole in terms of cost and antimicrobial resistance.”

The study was funded by Merck. The WikiGuidelines Group that established this guideline is entirely voluntary and unpaid; the group intends to establish a nonprofit organization to support the development of other guidelines using this novel methodology and eventually intends to trademark the name WikiGuidelines. The authors disclosed relationships with Pfizer, Eumedica, GSK, and others.

A version of this article first appeared on Medscape.com.

New recommendations from the WikiGuidelines Group offer strategies for the prevention, diagnosis, and management of urinary tract infections (UTIs) in children and adults.

While the guideline covers a range of clinical topics, including prophylaxis and antimicrobial stewardship, many key clinical questions remain unanswered because of a lack of high-quality evidence, according to lead author Zachary Nelson, PharmD, MPH, of HealthPartners and Park Nicollet Health Services, St. Louis Park, Minnesota, and colleagues.

“This guideline fills a critical gap by providing pragmatic, broadly applicable recommendations tailored for generalist care and systems-based practice,” Nelson and colleagues wrote in JAMA Network Open. “Our guidance is rooted in the best available evidence and is designed for clinicians from various backgrounds and healthcare environments. It emphasizes a patient-centered approach to the diagnosis, prevention, and treatment of UTIs and related genitourinary infections.”

The guideline panelists, including 54 experts from 12 countries, developed the document in accordance with Standards for Quality Improvement Reporting Excellence and the WikiGuidelines charter. The latter requires that “clear recommendations” are based on data from at least two concordant randomized clinical trials (RCTs), or one RCT plus one concordant prospective observational study.

This approach allowed the panel to provide clear recommendations for 6 out of 37 unique questions, while 3 other questions were partially answered. In other words, 75% of the questions lacked sufficient evidence for answers.

“These guidelines are important because they illuminate the clinical data and lack of data we have for approaching diagnosis and treatment of this common infection that leads to a wide array of morbidity and sometimes mortality, as well as significant cost burden to the healthcare system,” said coauthor Sarah Kurz, MD, clinical assistant professor of internal medicine at Michigan Medicine, Ann Arbor, in a written comment.

Jessica Hammett, MD, a urologist at Emory Healthcare, Atlanta, Georgia, who was not an author of the study, suggested that the guideline is additionally impactful because of the panel’s geographic diversity.

“It is an international collaboration that takes into account regional and international practice patterns and differences,” Hammett said in a written comment.

The key guideline recommendations are briefly summarized below.

Preventive Strategies for UTI

The guideline endorses cranberry products as preventive for UTI-prone women, children, and post-intervention patients, though data are insufficient to recommend them for older adults, those with bladder issues, or pregnant women.

Topical estrogen is recommended for postmenopausal women with recurrent UTIs, as it helps restore the vaginal microbiome with minimal systemic absorption. It may also benefit patients with breast cancer when nonhormonal alternatives fail.

For those with intact bladder anatomy, methenamine hippurate is suggested as a noninferior alternative to low-dose antibiotics for preventing recurrent UTIs.

“These findings confirm the best practice of starting postmenopausal women on vaginal estrogen to prevent UTIs, which is a treatment option that should be implemented more commonly,” Hammett said. “Interestingly as compared to the AUA guidelines, this paper recommends the use of cranberry supplementation and methenamine as antibiotic alternatives for preventing UTIs.”

 

Empirical Treatment Recommendations

According to the guideline, empirical treatment for UTIs should focus on antimicrobials with high urinary tract concentration and local pathogen efficacy.

Nitrofurantoin is recommended for uncomplicated cystitis, while trimethoprim/sulfamethoxazole (TMP/SMX) and first-generation cephalosporins are advised for pyelonephritis.

For intravenous therapy, ceftriaxone is preferred unless there are risk factors for multidrug resistance.

Recommended treatment durations include 5 days for nitrofurantoin, 3 days for TMP/SMX and fluoroquinolones, and a single dose for fosfomycin in acute cystitis cases. For acute pyelonephritis, fluoroquinolones are advised for 5-7 days, with dose-optimized beta-lactams for 7 days. Gram-negative bacteremia from urinary sources warrants a 7-day course.

 

Stewardship and Clinical Management

The guideline emphasizes antimicrobial stewardship, with support for antibiotic de-escalation and oral regimens where feasible, to reduce adverse effects and hospital stays. Although evidence is limited, the authors suggest thorough allergy assessment and selective reporting of susceptibility results to enhance antibiotic selection.

While data were insufficient to make clear recommendations about the treatment of asymptomatic bacteriuria, Nelson and colleagues suggested that this practice “risks side effects without benefit” while threatening antimicrobial sustainability.

Hammett agreed, noting that “[this] serves as an important reminder not to treat asymptomatic bacteriuria, as it increases side effects and bacterial resistance without any improvement as compared to placebo.”

 

Special Considerations for Urologic Procedures

Finally, patients undergoing urologic procedures, routine cystoscopy, and urodynamic studies generally do not require prophylactic antibiotics, according to the guideline. Single-dose antibiotic prophylaxis is recommended for low-risk nephrolithotomy patients, though high-risk individuals, such as those who are pregnant or post kidney transplant, may require extended prophylaxis.

Kurz suggested that the guideline consolidates and supports the foundation of evidence driving common practices.

“I don’t think these guidelines offer any strikingly new strategies, which is unsurprising, as they were created after a deep dive into existing literature,” Kurz said. “But more importantly, what I think they do is to highlight where and what the evidence is for many of the clinical strategies that are commonly employed. For example, in terms of prevention, it is common for primary care physicians, urologists, and infectious diseases doctors to recommend cranberry and hydration and to use methenamine. These guidelines highlight that there is sufficient quality and quantity of evidence to support these interventions.”

She also noted how the guidelines emphasize the need for symptoms to make a UTI diagnosis and advise against routine testing of asymptomatic individuals.

“Despite this not being new information, typical clinical practice is often out of step here, and this [guideline] reemphasizes the important factors when considering UTI diagnosis,” Kurz said.

Finally, she expressed frustration for the numerous knowledge gaps remaining in this area, which may be traced back to barriers ranging from the semantic to the more systemic.

“Some of the difficulty is lack of clear definitions and precise terminology regarding UTIs,” Kurz said, noting the unclear distinction between complicated and uncomplicated UTIs. “I would also argue that UTIs are a disease that predominantly affects women, and like many other diseases where this is the case, [they] tend to be less studied. Hopefully, this guideline’s spotlight on all that we do not know can inspire high-quality research to address these gaps, leading to optimal patient care along with decreased burden on the system as a whole in terms of cost and antimicrobial resistance.”

The study was funded by Merck. The WikiGuidelines Group that established this guideline is entirely voluntary and unpaid; the group intends to establish a nonprofit organization to support the development of other guidelines using this novel methodology and eventually intends to trademark the name WikiGuidelines. The authors disclosed relationships with Pfizer, Eumedica, GSK, and others.

A version of this article first appeared on Medscape.com.

New recommendations from the WikiGuidelines Group offer strategies for the prevention, diagnosis, and management of urinary tract infections (UTIs) in children and adults.

While the guideline covers a range of clinical topics, including prophylaxis and antimicrobial stewardship, many key clinical questions remain unanswered because of a lack of high-quality evidence, according to lead author Zachary Nelson, PharmD, MPH, of HealthPartners and Park Nicollet Health Services, St. Louis Park, Minnesota, and colleagues.

“This guideline fills a critical gap by providing pragmatic, broadly applicable recommendations tailored for generalist care and systems-based practice,” Nelson and colleagues wrote in JAMA Network Open. “Our guidance is rooted in the best available evidence and is designed for clinicians from various backgrounds and healthcare environments. It emphasizes a patient-centered approach to the diagnosis, prevention, and treatment of UTIs and related genitourinary infections.”

The guideline panelists, including 54 experts from 12 countries, developed the document in accordance with Standards for Quality Improvement Reporting Excellence and the WikiGuidelines charter. The latter requires that “clear recommendations” are based on data from at least two concordant randomized clinical trials (RCTs), or one RCT plus one concordant prospective observational study.

This approach allowed the panel to provide clear recommendations for 6 out of 37 unique questions, while 3 other questions were partially answered. In other words, 75% of the questions lacked sufficient evidence for answers.

“These guidelines are important because they illuminate the clinical data and lack of data we have for approaching diagnosis and treatment of this common infection that leads to a wide array of morbidity and sometimes mortality, as well as significant cost burden to the healthcare system,” said coauthor Sarah Kurz, MD, clinical assistant professor of internal medicine at Michigan Medicine, Ann Arbor, in a written comment.

Jessica Hammett, MD, a urologist at Emory Healthcare, Atlanta, Georgia, who was not an author of the study, suggested that the guideline is additionally impactful because of the panel’s geographic diversity.

“It is an international collaboration that takes into account regional and international practice patterns and differences,” Hammett said in a written comment.

The key guideline recommendations are briefly summarized below.

Preventive Strategies for UTI

The guideline endorses cranberry products as preventive for UTI-prone women, children, and post-intervention patients, though data are insufficient to recommend them for older adults, those with bladder issues, or pregnant women.

Topical estrogen is recommended for postmenopausal women with recurrent UTIs, as it helps restore the vaginal microbiome with minimal systemic absorption. It may also benefit patients with breast cancer when nonhormonal alternatives fail.

For those with intact bladder anatomy, methenamine hippurate is suggested as a noninferior alternative to low-dose antibiotics for preventing recurrent UTIs.

“These findings confirm the best practice of starting postmenopausal women on vaginal estrogen to prevent UTIs, which is a treatment option that should be implemented more commonly,” Hammett said. “Interestingly as compared to the AUA guidelines, this paper recommends the use of cranberry supplementation and methenamine as antibiotic alternatives for preventing UTIs.”

 

Empirical Treatment Recommendations

According to the guideline, empirical treatment for UTIs should focus on antimicrobials with high urinary tract concentration and local pathogen efficacy.

Nitrofurantoin is recommended for uncomplicated cystitis, while trimethoprim/sulfamethoxazole (TMP/SMX) and first-generation cephalosporins are advised for pyelonephritis.

For intravenous therapy, ceftriaxone is preferred unless there are risk factors for multidrug resistance.

Recommended treatment durations include 5 days for nitrofurantoin, 3 days for TMP/SMX and fluoroquinolones, and a single dose for fosfomycin in acute cystitis cases. For acute pyelonephritis, fluoroquinolones are advised for 5-7 days, with dose-optimized beta-lactams for 7 days. Gram-negative bacteremia from urinary sources warrants a 7-day course.

 

Stewardship and Clinical Management

The guideline emphasizes antimicrobial stewardship, with support for antibiotic de-escalation and oral regimens where feasible, to reduce adverse effects and hospital stays. Although evidence is limited, the authors suggest thorough allergy assessment and selective reporting of susceptibility results to enhance antibiotic selection.

While data were insufficient to make clear recommendations about the treatment of asymptomatic bacteriuria, Nelson and colleagues suggested that this practice “risks side effects without benefit” while threatening antimicrobial sustainability.

Hammett agreed, noting that “[this] serves as an important reminder not to treat asymptomatic bacteriuria, as it increases side effects and bacterial resistance without any improvement as compared to placebo.”

 

Special Considerations for Urologic Procedures

Finally, patients undergoing urologic procedures, routine cystoscopy, and urodynamic studies generally do not require prophylactic antibiotics, according to the guideline. Single-dose antibiotic prophylaxis is recommended for low-risk nephrolithotomy patients, though high-risk individuals, such as those who are pregnant or post kidney transplant, may require extended prophylaxis.

Kurz suggested that the guideline consolidates and supports the foundation of evidence driving common practices.

“I don’t think these guidelines offer any strikingly new strategies, which is unsurprising, as they were created after a deep dive into existing literature,” Kurz said. “But more importantly, what I think they do is to highlight where and what the evidence is for many of the clinical strategies that are commonly employed. For example, in terms of prevention, it is common for primary care physicians, urologists, and infectious diseases doctors to recommend cranberry and hydration and to use methenamine. These guidelines highlight that there is sufficient quality and quantity of evidence to support these interventions.”

She also noted how the guidelines emphasize the need for symptoms to make a UTI diagnosis and advise against routine testing of asymptomatic individuals.

“Despite this not being new information, typical clinical practice is often out of step here, and this [guideline] reemphasizes the important factors when considering UTI diagnosis,” Kurz said.

Finally, she expressed frustration for the numerous knowledge gaps remaining in this area, which may be traced back to barriers ranging from the semantic to the more systemic.

“Some of the difficulty is lack of clear definitions and precise terminology regarding UTIs,” Kurz said, noting the unclear distinction between complicated and uncomplicated UTIs. “I would also argue that UTIs are a disease that predominantly affects women, and like many other diseases where this is the case, [they] tend to be less studied. Hopefully, this guideline’s spotlight on all that we do not know can inspire high-quality research to address these gaps, leading to optimal patient care along with decreased burden on the system as a whole in terms of cost and antimicrobial resistance.”

The study was funded by Merck. The WikiGuidelines Group that established this guideline is entirely voluntary and unpaid; the group intends to establish a nonprofit organization to support the development of other guidelines using this novel methodology and eventually intends to trademark the name WikiGuidelines. The authors disclosed relationships with Pfizer, Eumedica, GSK, and others.

A version of this article first appeared on Medscape.com.