Neurology

Using a large, real-world population, researchers have developed models that predict cognitive decline in amyloid-positive patients with either mild cognitive impairment (MCI) or mild dementia.

The models may help clinicians better answer common questions from their patients about their rate of cognitive decline, noted the investigators, led by Pieter J. van der Veere, MD, Alzheimer Center and Department of Neurology, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, the Netherlands.

The findings were published online in Neurology.
 

Easy-to-Use Prototype

On average, it takes 4 years for MCI to progress to dementia. While new disease-modifying drugs targeting amyloid may slow progression, whether this effect is clinically meaningful is debatable, the investigators noted.

Earlier published models predicting cognitive decline either are limited to patients with MCI or haven’t been developed for easy clinical use, they added.

For the single-center study, researchers selected 961 amyloid-positive patients, mean age 65 years, who had at least two longitudinal Mini-Mental State Examinations (MMSEs). Of these, 310 had MCI, and 651 had mild dementia; 48% were women, and over 90% were White.

Researchers used linear mixed modeling to predict MMSE over time. They included age, sex, baseline MMSE, apolipoprotein E epsilon 4 status, cerebrospinal fluid (CSF) beta-amyloid (Aß) 1-42 and plasma phosphorylated-tau markers, and MRI total brain and hippocampal volume measures in the various models, including the final biomarker prediction models.

At follow-up, investigators found that the yearly decline in MMSEs increased in patients with both MCI and mild dementia. In MCI, the average MMSE declined from 26.4 (95% confidence interval [CI], 26.2-26.7) at baseline to 21.0 (95% CI, 20.2-21.7) after 5 years.

In mild dementia, the average MMSE declined from 22.4 (95% CI, 22.0-22.7) to 7.8 (95% CI, 6.8-8.9) at 5 years.

The predicted mean time to reach an MMSE of 20 (indicating mild dementia) for a hypothetical patient with MCI and a baseline MMSE of 28 and CSF Aß 1-42 of 925 pg/mL was 6 years (95% CI, 5.4-6.7 years).

However, with a hypothetical drug treatment that reduces the rate of decline by 30%, the patient would not reach the stage of moderate dementia for 8.6 years.

For a hypothetical patient with mild dementia with a baseline MMSE of 20 and CSF Aß 1-42 of 625 pg/mL, the predicted mean time to reach an MMSE of 15 was 2.3 years (95% CI, 2.1-2.5), or 3.3 years if decline is reduced by 30% with drug treatment.

External validation of the prediction models using data from the Alzheimer’s Disease Neuroimaging Initiative, a longitudinal cohort of patients not cognitively impaired or with MCI or dementia, showed comparable performance between the model-building approaches.

Researchers have incorporated the models in an easy-to-use calculator as a prototype tool that physicians can use to discuss prognosis, the uncertainty surrounding the predictions, and the impact of intervention strategies with patients.

Future prediction models may be able to predict patient-reported outcomes such as quality of life and daily functioning, the researchers noted.

“Until then, there is an important role for clinicians in translating the observed and predicted cognitive functions,” they wrote.

Compared with other studies predicting the MMSE decline using different statistical techniques, these new models showed similar or even better predictive performance while requiring less or similar information, the investigators noted.

The study used MMSE as a measure of cognition, but there may be intraindividual variation in these measures among cognitively normal patients, and those with cognitive decline may score lower if measurements are taken later in the day. Another study limitation was that the models were built for use in memory clinics, so generalizability to the general population could be limited.

The study was supported by Eisai, ZonMW, and Health~Holland Top Sector Life Sciences & Health. See paper for financial disclosures.

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

Using a large, real-world population, researchers have developed models that predict cognitive decline in amyloid-positive patients with either mild cognitive impairment (MCI) or mild dementia.

The models may help clinicians better answer common questions from their patients about their rate of cognitive decline, noted the investigators, led by Pieter J. van der Veere, MD, Alzheimer Center and Department of Neurology, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, the Netherlands.

The findings were published online in Neurology.
 

Easy-to-Use Prototype

On average, it takes 4 years for MCI to progress to dementia. While new disease-modifying drugs targeting amyloid may slow progression, whether this effect is clinically meaningful is debatable, the investigators noted.

Earlier published models predicting cognitive decline either are limited to patients with MCI or haven’t been developed for easy clinical use, they added.

For the single-center study, researchers selected 961 amyloid-positive patients, mean age 65 years, who had at least two longitudinal Mini-Mental State Examinations (MMSEs). Of these, 310 had MCI, and 651 had mild dementia; 48% were women, and over 90% were White.

Researchers used linear mixed modeling to predict MMSE over time. They included age, sex, baseline MMSE, apolipoprotein E epsilon 4 status, cerebrospinal fluid (CSF) beta-amyloid (Aß) 1-42 and plasma phosphorylated-tau markers, and MRI total brain and hippocampal volume measures in the various models, including the final biomarker prediction models.

At follow-up, investigators found that the yearly decline in MMSEs increased in patients with both MCI and mild dementia. In MCI, the average MMSE declined from 26.4 (95% confidence interval [CI], 26.2-26.7) at baseline to 21.0 (95% CI, 20.2-21.7) after 5 years.

In mild dementia, the average MMSE declined from 22.4 (95% CI, 22.0-22.7) to 7.8 (95% CI, 6.8-8.9) at 5 years.

The predicted mean time to reach an MMSE of 20 (indicating mild dementia) for a hypothetical patient with MCI and a baseline MMSE of 28 and CSF Aß 1-42 of 925 pg/mL was 6 years (95% CI, 5.4-6.7 years).

However, with a hypothetical drug treatment that reduces the rate of decline by 30%, the patient would not reach the stage of moderate dementia for 8.6 years.

For a hypothetical patient with mild dementia with a baseline MMSE of 20 and CSF Aß 1-42 of 625 pg/mL, the predicted mean time to reach an MMSE of 15 was 2.3 years (95% CI, 2.1-2.5), or 3.3 years if decline is reduced by 30% with drug treatment.

External validation of the prediction models using data from the Alzheimer’s Disease Neuroimaging Initiative, a longitudinal cohort of patients not cognitively impaired or with MCI or dementia, showed comparable performance between the model-building approaches.

Researchers have incorporated the models in an easy-to-use calculator as a prototype tool that physicians can use to discuss prognosis, the uncertainty surrounding the predictions, and the impact of intervention strategies with patients.

Future prediction models may be able to predict patient-reported outcomes such as quality of life and daily functioning, the researchers noted.

“Until then, there is an important role for clinicians in translating the observed and predicted cognitive functions,” they wrote.

Compared with other studies predicting the MMSE decline using different statistical techniques, these new models showed similar or even better predictive performance while requiring less or similar information, the investigators noted.

The study used MMSE as a measure of cognition, but there may be intraindividual variation in these measures among cognitively normal patients, and those with cognitive decline may score lower if measurements are taken later in the day. Another study limitation was that the models were built for use in memory clinics, so generalizability to the general population could be limited.

The study was supported by Eisai, ZonMW, and Health~Holland Top Sector Life Sciences & Health. See paper for financial disclosures.

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

Using a large, real-world population, researchers have developed models that predict cognitive decline in amyloid-positive patients with either mild cognitive impairment (MCI) or mild dementia.

The models may help clinicians better answer common questions from their patients about their rate of cognitive decline, noted the investigators, led by Pieter J. van der Veere, MD, Alzheimer Center and Department of Neurology, Amsterdam Neuroscience, VU University Medical Center, Amsterdam, the Netherlands.

The findings were published online in Neurology.
 

Easy-to-Use Prototype

On average, it takes 4 years for MCI to progress to dementia. While new disease-modifying drugs targeting amyloid may slow progression, whether this effect is clinically meaningful is debatable, the investigators noted.

Earlier published models predicting cognitive decline either are limited to patients with MCI or haven’t been developed for easy clinical use, they added.

For the single-center study, researchers selected 961 amyloid-positive patients, mean age 65 years, who had at least two longitudinal Mini-Mental State Examinations (MMSEs). Of these, 310 had MCI, and 651 had mild dementia; 48% were women, and over 90% were White.

Researchers used linear mixed modeling to predict MMSE over time. They included age, sex, baseline MMSE, apolipoprotein E epsilon 4 status, cerebrospinal fluid (CSF) beta-amyloid (Aß) 1-42 and plasma phosphorylated-tau markers, and MRI total brain and hippocampal volume measures in the various models, including the final biomarker prediction models.

At follow-up, investigators found that the yearly decline in MMSEs increased in patients with both MCI and mild dementia. In MCI, the average MMSE declined from 26.4 (95% confidence interval [CI], 26.2-26.7) at baseline to 21.0 (95% CI, 20.2-21.7) after 5 years.

In mild dementia, the average MMSE declined from 22.4 (95% CI, 22.0-22.7) to 7.8 (95% CI, 6.8-8.9) at 5 years.

The predicted mean time to reach an MMSE of 20 (indicating mild dementia) for a hypothetical patient with MCI and a baseline MMSE of 28 and CSF Aß 1-42 of 925 pg/mL was 6 years (95% CI, 5.4-6.7 years).

However, with a hypothetical drug treatment that reduces the rate of decline by 30%, the patient would not reach the stage of moderate dementia for 8.6 years.

For a hypothetical patient with mild dementia with a baseline MMSE of 20 and CSF Aß 1-42 of 625 pg/mL, the predicted mean time to reach an MMSE of 15 was 2.3 years (95% CI, 2.1-2.5), or 3.3 years if decline is reduced by 30% with drug treatment.

External validation of the prediction models using data from the Alzheimer’s Disease Neuroimaging Initiative, a longitudinal cohort of patients not cognitively impaired or with MCI or dementia, showed comparable performance between the model-building approaches.

Researchers have incorporated the models in an easy-to-use calculator as a prototype tool that physicians can use to discuss prognosis, the uncertainty surrounding the predictions, and the impact of intervention strategies with patients.

Future prediction models may be able to predict patient-reported outcomes such as quality of life and daily functioning, the researchers noted.

“Until then, there is an important role for clinicians in translating the observed and predicted cognitive functions,” they wrote.

Compared with other studies predicting the MMSE decline using different statistical techniques, these new models showed similar or even better predictive performance while requiring less or similar information, the investigators noted.

The study used MMSE as a measure of cognition, but there may be intraindividual variation in these measures among cognitively normal patients, and those with cognitive decline may score lower if measurements are taken later in the day. Another study limitation was that the models were built for use in memory clinics, so generalizability to the general population could be limited.

The study was supported by Eisai, ZonMW, and Health~Holland Top Sector Life Sciences & Health. See paper for financial disclosures.

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

On World Brain Day (July 22, 2024), the German Society of Neurology (DGN) and the German Brain Foundation pointed out that too much sugar can harm the brain. The current results of the Global Burden of Diseases study shows that stroke and dementia are among the top 10 causes of death. A healthy, active lifestyle with sufficient exercise and sleep, along with the avoidance of harmful substances like alcohol, nicotine, or excessive sugar, protects the brain.

“Of course, the dose makes the poison as the brain, being the body’s powerhouse, needs glucose to function,” said Frank Erbguth, MD, PhD, president of the German Brain Foundation, in a press release from DGN and the German Brain Foundation. “However, with a permanent increase in blood sugar levels due to too many, too lavish meals and constant snacking on the side, we overload the system and fuel the development of neurologic diseases, particularly dementia and stroke.”

The per capita consumption of sugar was 33.2 kg in 2021/2022, which is almost twice the recommended amount. The German Nutrition Society recommends that no more than 10% of energy come from sugar. With a goal of 2000 kilocalories, that’s 50 g per day, or 18 kg per year. This total includes not only added sugar but also naturally occurring sugar, such as in fruits, honey, or juices.
 

What’s the Mechanism?

High blood sugar levels damage brain blood vessels and promote deposits on the vessel walls, thus reducing blood flow and nutrient supply to brain cells. This process can cause various limitations, as well as vascular dementia.

In Germany, around 250,000 people are diagnosed with dementia annually, and 15%-25% have vascular dementia. That proportion represents between 40,000 and 60,000 new cases each year.

In addition, glycosaminoglycans, which are complex sugar molecules, can directly impair cognition. They affect the function of synapses between nerve cells and, thus, affect neuronal plasticity. Experimental data presented at the 2023 American Chemical Society Congress have shown this phenomenon.

Twenty years ago, a study provided evidence that a diet high in fat and sugar disrupts neuronal plasticity and can impair the function of the hippocampus in the long term. A recent meta-analysis confirms these findings: Although mental performance improves at 2-12 hours after sugar consumption, sustained sugar intake can permanently damage cognitive function.

Diabetes mellitus can indirectly cause brain damage. Since the 1990s, it has been known that patients with type 2 diabetes have a significantly higher risk for dementia. It is suspected that glucose metabolism is also disrupted in neurons, thus contributing to the development of Alzheimer’s disease. Insulin also plays a role in the formation of Alzheimer’s plaques.

The Max Planck Institute for Metabolism Research demonstrated in 2023 that regular consumption of high-sugar and high-fat foods can change the brain. This leads to an increased craving for high-sugar and high-fat foods, which in turn promotes the development of obesity and type 2 diabetes.
 

Reduce Sugar Consumption

DGN and the German Brain Foundation advise minimizing sugar consumption. This process is often challenging, as even a small dose of sugar can trigger the gut to send signals to the brain via the vagus nerve, thus causing a strong craving for more sugar. “This could be the reason why some people quickly eat a whole chocolate bar after just one piece,” said Dr. Erbguth. In addition, dopamine, a “feel-good hormone,” is released in the brain when consuming sugar, thus leading to a desire for more.

“It is wise to break free from this cycle by largely avoiding sugar,” said Peter Berlit, MD, secretary general and spokesperson for DGN. “The effort is worth it, as 40% of all dementia cases and 90% of all strokes are preventable, with many of them linked to industrial sugar,” said Dr. Berlit. DGN and the German Brain Foundation support the call for a tax on particularly sugary beverages. They also pointed out that foods like yogurt or tomato ketchup contain sugar, and alcohol can also significantly raise blood sugar levels.

This story was translated from the Medscape German edition 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.

On World Brain Day (July 22, 2024), the German Society of Neurology (DGN) and the German Brain Foundation pointed out that too much sugar can harm the brain. The current results of the Global Burden of Diseases study shows that stroke and dementia are among the top 10 causes of death. A healthy, active lifestyle with sufficient exercise and sleep, along with the avoidance of harmful substances like alcohol, nicotine, or excessive sugar, protects the brain.

“Of course, the dose makes the poison as the brain, being the body’s powerhouse, needs glucose to function,” said Frank Erbguth, MD, PhD, president of the German Brain Foundation, in a press release from DGN and the German Brain Foundation. “However, with a permanent increase in blood sugar levels due to too many, too lavish meals and constant snacking on the side, we overload the system and fuel the development of neurologic diseases, particularly dementia and stroke.”

The per capita consumption of sugar was 33.2 kg in 2021/2022, which is almost twice the recommended amount. The German Nutrition Society recommends that no more than 10% of energy come from sugar. With a goal of 2000 kilocalories, that’s 50 g per day, or 18 kg per year. This total includes not only added sugar but also naturally occurring sugar, such as in fruits, honey, or juices.
 

What’s the Mechanism?

High blood sugar levels damage brain blood vessels and promote deposits on the vessel walls, thus reducing blood flow and nutrient supply to brain cells. This process can cause various limitations, as well as vascular dementia.

In Germany, around 250,000 people are diagnosed with dementia annually, and 15%-25% have vascular dementia. That proportion represents between 40,000 and 60,000 new cases each year.

In addition, glycosaminoglycans, which are complex sugar molecules, can directly impair cognition. They affect the function of synapses between nerve cells and, thus, affect neuronal plasticity. Experimental data presented at the 2023 American Chemical Society Congress have shown this phenomenon.

Twenty years ago, a study provided evidence that a diet high in fat and sugar disrupts neuronal plasticity and can impair the function of the hippocampus in the long term. A recent meta-analysis confirms these findings: Although mental performance improves at 2-12 hours after sugar consumption, sustained sugar intake can permanently damage cognitive function.

Diabetes mellitus can indirectly cause brain damage. Since the 1990s, it has been known that patients with type 2 diabetes have a significantly higher risk for dementia. It is suspected that glucose metabolism is also disrupted in neurons, thus contributing to the development of Alzheimer’s disease. Insulin also plays a role in the formation of Alzheimer’s plaques.

The Max Planck Institute for Metabolism Research demonstrated in 2023 that regular consumption of high-sugar and high-fat foods can change the brain. This leads to an increased craving for high-sugar and high-fat foods, which in turn promotes the development of obesity and type 2 diabetes.
 

Reduce Sugar Consumption

DGN and the German Brain Foundation advise minimizing sugar consumption. This process is often challenging, as even a small dose of sugar can trigger the gut to send signals to the brain via the vagus nerve, thus causing a strong craving for more sugar. “This could be the reason why some people quickly eat a whole chocolate bar after just one piece,” said Dr. Erbguth. In addition, dopamine, a “feel-good hormone,” is released in the brain when consuming sugar, thus leading to a desire for more.

“It is wise to break free from this cycle by largely avoiding sugar,” said Peter Berlit, MD, secretary general and spokesperson for DGN. “The effort is worth it, as 40% of all dementia cases and 90% of all strokes are preventable, with many of them linked to industrial sugar,” said Dr. Berlit. DGN and the German Brain Foundation support the call for a tax on particularly sugary beverages. They also pointed out that foods like yogurt or tomato ketchup contain sugar, and alcohol can also significantly raise blood sugar levels.

This story was translated from the Medscape German edition 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.

On World Brain Day (July 22, 2024), the German Society of Neurology (DGN) and the German Brain Foundation pointed out that too much sugar can harm the brain. The current results of the Global Burden of Diseases study shows that stroke and dementia are among the top 10 causes of death. A healthy, active lifestyle with sufficient exercise and sleep, along with the avoidance of harmful substances like alcohol, nicotine, or excessive sugar, protects the brain.

“Of course, the dose makes the poison as the brain, being the body’s powerhouse, needs glucose to function,” said Frank Erbguth, MD, PhD, president of the German Brain Foundation, in a press release from DGN and the German Brain Foundation. “However, with a permanent increase in blood sugar levels due to too many, too lavish meals and constant snacking on the side, we overload the system and fuel the development of neurologic diseases, particularly dementia and stroke.”

The per capita consumption of sugar was 33.2 kg in 2021/2022, which is almost twice the recommended amount. The German Nutrition Society recommends that no more than 10% of energy come from sugar. With a goal of 2000 kilocalories, that’s 50 g per day, or 18 kg per year. This total includes not only added sugar but also naturally occurring sugar, such as in fruits, honey, or juices.
 

What’s the Mechanism?

High blood sugar levels damage brain blood vessels and promote deposits on the vessel walls, thus reducing blood flow and nutrient supply to brain cells. This process can cause various limitations, as well as vascular dementia.

In Germany, around 250,000 people are diagnosed with dementia annually, and 15%-25% have vascular dementia. That proportion represents between 40,000 and 60,000 new cases each year.

In addition, glycosaminoglycans, which are complex sugar molecules, can directly impair cognition. They affect the function of synapses between nerve cells and, thus, affect neuronal plasticity. Experimental data presented at the 2023 American Chemical Society Congress have shown this phenomenon.

Twenty years ago, a study provided evidence that a diet high in fat and sugar disrupts neuronal plasticity and can impair the function of the hippocampus in the long term. A recent meta-analysis confirms these findings: Although mental performance improves at 2-12 hours after sugar consumption, sustained sugar intake can permanently damage cognitive function.

Diabetes mellitus can indirectly cause brain damage. Since the 1990s, it has been known that patients with type 2 diabetes have a significantly higher risk for dementia. It is suspected that glucose metabolism is also disrupted in neurons, thus contributing to the development of Alzheimer’s disease. Insulin also plays a role in the formation of Alzheimer’s plaques.

The Max Planck Institute for Metabolism Research demonstrated in 2023 that regular consumption of high-sugar and high-fat foods can change the brain. This leads to an increased craving for high-sugar and high-fat foods, which in turn promotes the development of obesity and type 2 diabetes.
 

Reduce Sugar Consumption

DGN and the German Brain Foundation advise minimizing sugar consumption. This process is often challenging, as even a small dose of sugar can trigger the gut to send signals to the brain via the vagus nerve, thus causing a strong craving for more sugar. “This could be the reason why some people quickly eat a whole chocolate bar after just one piece,” said Dr. Erbguth. In addition, dopamine, a “feel-good hormone,” is released in the brain when consuming sugar, thus leading to a desire for more.

“It is wise to break free from this cycle by largely avoiding sugar,” said Peter Berlit, MD, secretary general and spokesperson for DGN. “The effort is worth it, as 40% of all dementia cases and 90% of all strokes are preventable, with many of them linked to industrial sugar,” said Dr. Berlit. DGN and the German Brain Foundation support the call for a tax on particularly sugary beverages. They also pointed out that foods like yogurt or tomato ketchup contain sugar, and alcohol can also significantly raise blood sugar levels.

This story was translated from the Medscape German edition 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.

An intermittent fasting (IF) diet and a standard healthy living (HL) diet focused on healthy foods both lead to weight loss, reduced insulin resistance (IR), and slowed brain aging in older overweight adults with IR, new research showed. However, neither diet has an effect on Alzheimer’s disease (AD) biomarkers.

Although investigators found both diets were beneficial, some outcomes were more robust with the IF diet.

“The study provides a blueprint for assessing brain effects of dietary interventions and motivates further research on intermittent fasting and continuous diets for brain health optimization,” wrote the investigators, led by Dimitrios Kapogiannis, MD, chief, human neuroscience section, National Institute on Aging, and adjunct associate professor of neurology, the Johns Hopkins University School of Medicine.

The findings were published online in Cell Metabolism.
 

Cognitive Outcomes

The prevalence of IR — reduced cellular sensitivity to insulin that’s a hallmark of type 2 diabetes — increases with age and obesity, adding to an increased risk for accelerated brain aging as well as AD and related dementias (ADRD) in older adults who have overweight.

Studies reported healthy diets promote overall health, but it’s unclear whether, and to what extent, they improve brain health beyond general health enhancement.

Researchers used multiple brain and cognitive measures to assess dietary effects on brain health, including peripherally harvested neuron-derived extracellular vesicles (NDEVs) to probe neuronal insulin signaling; MRI to investigate the pace of brain aging; magnetic resonance spectroscopy (MRS) to measure brain glucose, metabolites, and neurotransmitters; and NDEVs and cerebrospinal fluid to derive biomarkers for AD/ADRD.

The study included 40 cognitively intact overweight participants with IR, mean age 63.2 years, 60% women, and 62.5% White. Their mean body weight was 97.1 kg and mean body mass index (BMI) was 34.4.

Participants were randomly assigned to 8 weeks of an IF diet or a HL diet that emphasizes fruits, vegetables, whole grains, lean proteins, and low-fat dairy and limits added sugars, saturated fats, and sodium.

The IF diet involved following the HL diet for 5 days per week and restricting calories to a quarter of the recommended daily intake for 2 consecutive days.

Both diets reduced neuronal IR and had comparable effects in improving insulin signaling biomarkers in NDEVs, reducing brain glucose on MRS, and improving blood biomarkers of carbohydrate and lipid metabolism.

Using MRI, researchers also assessed brain age, an indication of whether the brain appears older or younger than an individual’s chronological age. There was a decrease of 2.63 years with the IF diet (P = .05) and 2.42 years with the HL diet (P < .001) in the anterior cingulate and ventromedial prefrontal cortex.

Both diets improved executive function and memory, with those following the IF diet benefiting more in strategic planning, switching between two cognitively demanding tasks, cued recall, and other areas.
 

Hypothesis-Generating Research

AD biomarkers including amyloid beta 42 (Aß42), Aß40, and plasma phosphorylated-tau181 did not change with either diet, a finding that investigators speculated may be due to the short duration of the study. Light-chain neurofilaments increased across groups with no differences between the diets.

In other findings, BMI decreased by 1.41 with the IF diet and by 0.80 with the HL diet, and a similar pattern was observed for weight. Waist circumference decreased in both groups with no significant differences between diets.

An exploratory analysis showed executive function improved with the IF diet but not with the HL diet in women, whereas it improved with both diets in men. BMI and apolipoprotein E and SLC16A7 genotypes also modulated diet effects.

Both diets were well tolerated. The most frequent adverse events were gastrointestinal and occurred only with the IF diet.

The authors noted the findings are preliminary and results are hypothesis generating. Study limitations included the study’s short duration and its power to detect anything other than large to moderate effect size changes and differences between the diets. Researchers also didn’t acquire data on dietary intake, so lapses in adherence can’t be excluded. However, the large decreases in BMI, weight, and waist circumference with both diets indicated high adherence.

The study was supported by the National Institutes of Health’s National Institute on Aging. The authors reported no competing interests.
 

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

An intermittent fasting (IF) diet and a standard healthy living (HL) diet focused on healthy foods both lead to weight loss, reduced insulin resistance (IR), and slowed brain aging in older overweight adults with IR, new research showed. However, neither diet has an effect on Alzheimer’s disease (AD) biomarkers.

Although investigators found both diets were beneficial, some outcomes were more robust with the IF diet.

“The study provides a blueprint for assessing brain effects of dietary interventions and motivates further research on intermittent fasting and continuous diets for brain health optimization,” wrote the investigators, led by Dimitrios Kapogiannis, MD, chief, human neuroscience section, National Institute on Aging, and adjunct associate professor of neurology, the Johns Hopkins University School of Medicine.

The findings were published online in Cell Metabolism.
 

Cognitive Outcomes

The prevalence of IR — reduced cellular sensitivity to insulin that’s a hallmark of type 2 diabetes — increases with age and obesity, adding to an increased risk for accelerated brain aging as well as AD and related dementias (ADRD) in older adults who have overweight.

Studies reported healthy diets promote overall health, but it’s unclear whether, and to what extent, they improve brain health beyond general health enhancement.

Researchers used multiple brain and cognitive measures to assess dietary effects on brain health, including peripherally harvested neuron-derived extracellular vesicles (NDEVs) to probe neuronal insulin signaling; MRI to investigate the pace of brain aging; magnetic resonance spectroscopy (MRS) to measure brain glucose, metabolites, and neurotransmitters; and NDEVs and cerebrospinal fluid to derive biomarkers for AD/ADRD.

The study included 40 cognitively intact overweight participants with IR, mean age 63.2 years, 60% women, and 62.5% White. Their mean body weight was 97.1 kg and mean body mass index (BMI) was 34.4.

Participants were randomly assigned to 8 weeks of an IF diet or a HL diet that emphasizes fruits, vegetables, whole grains, lean proteins, and low-fat dairy and limits added sugars, saturated fats, and sodium.

The IF diet involved following the HL diet for 5 days per week and restricting calories to a quarter of the recommended daily intake for 2 consecutive days.

Both diets reduced neuronal IR and had comparable effects in improving insulin signaling biomarkers in NDEVs, reducing brain glucose on MRS, and improving blood biomarkers of carbohydrate and lipid metabolism.

Using MRI, researchers also assessed brain age, an indication of whether the brain appears older or younger than an individual’s chronological age. There was a decrease of 2.63 years with the IF diet (P = .05) and 2.42 years with the HL diet (P < .001) in the anterior cingulate and ventromedial prefrontal cortex.

Both diets improved executive function and memory, with those following the IF diet benefiting more in strategic planning, switching between two cognitively demanding tasks, cued recall, and other areas.
 

Hypothesis-Generating Research

AD biomarkers including amyloid beta 42 (Aß42), Aß40, and plasma phosphorylated-tau181 did not change with either diet, a finding that investigators speculated may be due to the short duration of the study. Light-chain neurofilaments increased across groups with no differences between the diets.

In other findings, BMI decreased by 1.41 with the IF diet and by 0.80 with the HL diet, and a similar pattern was observed for weight. Waist circumference decreased in both groups with no significant differences between diets.

An exploratory analysis showed executive function improved with the IF diet but not with the HL diet in women, whereas it improved with both diets in men. BMI and apolipoprotein E and SLC16A7 genotypes also modulated diet effects.

Both diets were well tolerated. The most frequent adverse events were gastrointestinal and occurred only with the IF diet.

The authors noted the findings are preliminary and results are hypothesis generating. Study limitations included the study’s short duration and its power to detect anything other than large to moderate effect size changes and differences between the diets. Researchers also didn’t acquire data on dietary intake, so lapses in adherence can’t be excluded. However, the large decreases in BMI, weight, and waist circumference with both diets indicated high adherence.

The study was supported by the National Institutes of Health’s National Institute on Aging. The authors reported no competing interests.
 

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

An intermittent fasting (IF) diet and a standard healthy living (HL) diet focused on healthy foods both lead to weight loss, reduced insulin resistance (IR), and slowed brain aging in older overweight adults with IR, new research showed. However, neither diet has an effect on Alzheimer’s disease (AD) biomarkers.

Although investigators found both diets were beneficial, some outcomes were more robust with the IF diet.

“The study provides a blueprint for assessing brain effects of dietary interventions and motivates further research on intermittent fasting and continuous diets for brain health optimization,” wrote the investigators, led by Dimitrios Kapogiannis, MD, chief, human neuroscience section, National Institute on Aging, and adjunct associate professor of neurology, the Johns Hopkins University School of Medicine.

The findings were published online in Cell Metabolism.
 

Cognitive Outcomes

The prevalence of IR — reduced cellular sensitivity to insulin that’s a hallmark of type 2 diabetes — increases with age and obesity, adding to an increased risk for accelerated brain aging as well as AD and related dementias (ADRD) in older adults who have overweight.

Studies reported healthy diets promote overall health, but it’s unclear whether, and to what extent, they improve brain health beyond general health enhancement.

Researchers used multiple brain and cognitive measures to assess dietary effects on brain health, including peripherally harvested neuron-derived extracellular vesicles (NDEVs) to probe neuronal insulin signaling; MRI to investigate the pace of brain aging; magnetic resonance spectroscopy (MRS) to measure brain glucose, metabolites, and neurotransmitters; and NDEVs and cerebrospinal fluid to derive biomarkers for AD/ADRD.

The study included 40 cognitively intact overweight participants with IR, mean age 63.2 years, 60% women, and 62.5% White. Their mean body weight was 97.1 kg and mean body mass index (BMI) was 34.4.

Participants were randomly assigned to 8 weeks of an IF diet or a HL diet that emphasizes fruits, vegetables, whole grains, lean proteins, and low-fat dairy and limits added sugars, saturated fats, and sodium.

The IF diet involved following the HL diet for 5 days per week and restricting calories to a quarter of the recommended daily intake for 2 consecutive days.

Both diets reduced neuronal IR and had comparable effects in improving insulin signaling biomarkers in NDEVs, reducing brain glucose on MRS, and improving blood biomarkers of carbohydrate and lipid metabolism.

Using MRI, researchers also assessed brain age, an indication of whether the brain appears older or younger than an individual’s chronological age. There was a decrease of 2.63 years with the IF diet (P = .05) and 2.42 years with the HL diet (P < .001) in the anterior cingulate and ventromedial prefrontal cortex.

Both diets improved executive function and memory, with those following the IF diet benefiting more in strategic planning, switching between two cognitively demanding tasks, cued recall, and other areas.
 

Hypothesis-Generating Research

AD biomarkers including amyloid beta 42 (Aß42), Aß40, and plasma phosphorylated-tau181 did not change with either diet, a finding that investigators speculated may be due to the short duration of the study. Light-chain neurofilaments increased across groups with no differences between the diets.

In other findings, BMI decreased by 1.41 with the IF diet and by 0.80 with the HL diet, and a similar pattern was observed for weight. Waist circumference decreased in both groups with no significant differences between diets.

An exploratory analysis showed executive function improved with the IF diet but not with the HL diet in women, whereas it improved with both diets in men. BMI and apolipoprotein E and SLC16A7 genotypes also modulated diet effects.

Both diets were well tolerated. The most frequent adverse events were gastrointestinal and occurred only with the IF diet.

The authors noted the findings are preliminary and results are hypothesis generating. Study limitations included the study’s short duration and its power to detect anything other than large to moderate effect size changes and differences between the diets. Researchers also didn’t acquire data on dietary intake, so lapses in adherence can’t be excluded. However, the large decreases in BMI, weight, and waist circumference with both diets indicated high adherence.

The study was supported by the National Institutes of Health’s National Institute on Aging. The authors reported no competing interests.
 

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

Youth with conduct disorder (CD) have extensive brain structure differences, new research showed.

In findings that illuminate the differences in areas of the brain critical for emotional processing and decision-making, investigators found lower cortical surface area and reduced volume in the limbic and striatal regions of the brain, as well as lower thalamus volume, in youth with CD.

“We know very little about this disorder even though it can carry a high burden for families and societies,” co–lead author Yidian Gao, PhD, of the University of Birmingham, Birmingham, England, said in a press release. 

“The sample included in our study is 10-20 times larger than previous studies and contains data on children from North America, Europe, and Asia. It provides the most compelling evidence to date that CD is associated with widespread structural brain differences,” he added.

The findings were published online in The Lancet Psychiatry.
 

An Understudied Disorder

In the largest study of its kind, researchers at the Universities of Bath and Birmingham, both in England, collaborated with research teams across Europe, North America, and Asia, as part of the Enhancing NeuroImaging Genetics through Meta-Analysis–Antisocial Behavior Working Group to learn more about one of the “least researched psychiatric disorders,” they wrote. 

The investigators used MRI to examine the brain structure of 1185 children with a clinical diagnosis of CD and 1253 typically developing children from 17-21 across 15 international study cohorts.

After adjusting for total intracranial volume investigators found that youth with CD (29% women; mean age, 13.7 years) had lower total surface area and lower regional surface area in 26 of the 34 cortical regions, spanning all four lobes of the brain, compared with their typically developing counterparts (35.6% women; mean age, 13.5 years).

Youth with CD also showed greater cortical thickness in the caudal anterior cingulate cortex (P = .0001) and lower cortical thickness in the banks of the superior temporal sulcus vs those without CD (P = .0010).

In addition, the CD group also had lower volume in the thalamus (P = .0009), amygdala (P = .0014), hippocampus (P = .0031), and nucleus accumbens (P = .0052). 

Most findings remained significant after adjusting for intelligence quotient, psychiatric comorbidities, and psychotropic medication use. Of note, group difference in cortical thickness, 22 of 27 differences in surface area. In addition, three of four subcortical differences remained robust after adjusting for co-occurring attention-deficit/hyperactivity disorder, the most frequent comorbidity.

When the investigators divided individuals with CD into two subgroups — those with high vs low levels of callous-unemotional traits — they found limited overall differences. However, those with high callous-unemotional traits had lower surface area in the superior temporal and superior frontal gyri vs those with low callous-unemotional traits and the typically developing group.

Investigators also found that individuals with childhood-onset CD had greater cortical thickness in the caudal anterior cingulate cortex compared with those with adolescent-onset CD. 

Study limitations include comparison of different cohorts with differing protocols that could affect the validity of the findings. In addition, subgroup samples were small and had lower statistical power.

“Our finding of robust brain alterations in conduct disorder — similar to those in more widely recognized and widely treated disorders such as ADHD — emphasize the need for a greater focus on conduct disorder in research, treatment, and public policy,” the authors noted.

Seven study authors reported conflicts of interest with various pharmaceutical companies and other organizations.

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

Youth with conduct disorder (CD) have extensive brain structure differences, new research showed.

In findings that illuminate the differences in areas of the brain critical for emotional processing and decision-making, investigators found lower cortical surface area and reduced volume in the limbic and striatal regions of the brain, as well as lower thalamus volume, in youth with CD.

“We know very little about this disorder even though it can carry a high burden for families and societies,” co–lead author Yidian Gao, PhD, of the University of Birmingham, Birmingham, England, said in a press release. 

“The sample included in our study is 10-20 times larger than previous studies and contains data on children from North America, Europe, and Asia. It provides the most compelling evidence to date that CD is associated with widespread structural brain differences,” he added.

The findings were published online in The Lancet Psychiatry.
 

An Understudied Disorder

In the largest study of its kind, researchers at the Universities of Bath and Birmingham, both in England, collaborated with research teams across Europe, North America, and Asia, as part of the Enhancing NeuroImaging Genetics through Meta-Analysis–Antisocial Behavior Working Group to learn more about one of the “least researched psychiatric disorders,” they wrote. 

The investigators used MRI to examine the brain structure of 1185 children with a clinical diagnosis of CD and 1253 typically developing children from 17-21 across 15 international study cohorts.

After adjusting for total intracranial volume investigators found that youth with CD (29% women; mean age, 13.7 years) had lower total surface area and lower regional surface area in 26 of the 34 cortical regions, spanning all four lobes of the brain, compared with their typically developing counterparts (35.6% women; mean age, 13.5 years).

Youth with CD also showed greater cortical thickness in the caudal anterior cingulate cortex (P = .0001) and lower cortical thickness in the banks of the superior temporal sulcus vs those without CD (P = .0010).

In addition, the CD group also had lower volume in the thalamus (P = .0009), amygdala (P = .0014), hippocampus (P = .0031), and nucleus accumbens (P = .0052). 

Most findings remained significant after adjusting for intelligence quotient, psychiatric comorbidities, and psychotropic medication use. Of note, group difference in cortical thickness, 22 of 27 differences in surface area. In addition, three of four subcortical differences remained robust after adjusting for co-occurring attention-deficit/hyperactivity disorder, the most frequent comorbidity.

When the investigators divided individuals with CD into two subgroups — those with high vs low levels of callous-unemotional traits — they found limited overall differences. However, those with high callous-unemotional traits had lower surface area in the superior temporal and superior frontal gyri vs those with low callous-unemotional traits and the typically developing group.

Investigators also found that individuals with childhood-onset CD had greater cortical thickness in the caudal anterior cingulate cortex compared with those with adolescent-onset CD. 

Study limitations include comparison of different cohorts with differing protocols that could affect the validity of the findings. In addition, subgroup samples were small and had lower statistical power.

“Our finding of robust brain alterations in conduct disorder — similar to those in more widely recognized and widely treated disorders such as ADHD — emphasize the need for a greater focus on conduct disorder in research, treatment, and public policy,” the authors noted.

Seven study authors reported conflicts of interest with various pharmaceutical companies and other organizations.

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

Youth with conduct disorder (CD) have extensive brain structure differences, new research showed.

In findings that illuminate the differences in areas of the brain critical for emotional processing and decision-making, investigators found lower cortical surface area and reduced volume in the limbic and striatal regions of the brain, as well as lower thalamus volume, in youth with CD.

“We know very little about this disorder even though it can carry a high burden for families and societies,” co–lead author Yidian Gao, PhD, of the University of Birmingham, Birmingham, England, said in a press release. 

“The sample included in our study is 10-20 times larger than previous studies and contains data on children from North America, Europe, and Asia. It provides the most compelling evidence to date that CD is associated with widespread structural brain differences,” he added.

The findings were published online in The Lancet Psychiatry.
 

An Understudied Disorder

In the largest study of its kind, researchers at the Universities of Bath and Birmingham, both in England, collaborated with research teams across Europe, North America, and Asia, as part of the Enhancing NeuroImaging Genetics through Meta-Analysis–Antisocial Behavior Working Group to learn more about one of the “least researched psychiatric disorders,” they wrote. 

The investigators used MRI to examine the brain structure of 1185 children with a clinical diagnosis of CD and 1253 typically developing children from 17-21 across 15 international study cohorts.

After adjusting for total intracranial volume investigators found that youth with CD (29% women; mean age, 13.7 years) had lower total surface area and lower regional surface area in 26 of the 34 cortical regions, spanning all four lobes of the brain, compared with their typically developing counterparts (35.6% women; mean age, 13.5 years).

Youth with CD also showed greater cortical thickness in the caudal anterior cingulate cortex (P = .0001) and lower cortical thickness in the banks of the superior temporal sulcus vs those without CD (P = .0010).

In addition, the CD group also had lower volume in the thalamus (P = .0009), amygdala (P = .0014), hippocampus (P = .0031), and nucleus accumbens (P = .0052). 

Most findings remained significant after adjusting for intelligence quotient, psychiatric comorbidities, and psychotropic medication use. Of note, group difference in cortical thickness, 22 of 27 differences in surface area. In addition, three of four subcortical differences remained robust after adjusting for co-occurring attention-deficit/hyperactivity disorder, the most frequent comorbidity.

When the investigators divided individuals with CD into two subgroups — those with high vs low levels of callous-unemotional traits — they found limited overall differences. However, those with high callous-unemotional traits had lower surface area in the superior temporal and superior frontal gyri vs those with low callous-unemotional traits and the typically developing group.

Investigators also found that individuals with childhood-onset CD had greater cortical thickness in the caudal anterior cingulate cortex compared with those with adolescent-onset CD. 

Study limitations include comparison of different cohorts with differing protocols that could affect the validity of the findings. In addition, subgroup samples were small and had lower statistical power.

“Our finding of robust brain alterations in conduct disorder — similar to those in more widely recognized and widely treated disorders such as ADHD — emphasize the need for a greater focus on conduct disorder in research, treatment, and public policy,” the authors noted.

Seven study authors reported conflicts of interest with various pharmaceutical companies and other organizations.

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

Proposed clinical criteria for a memory loss disorder that is often misdiagnosed as Alzheimer’s disease (AD) have been published.

The new criteria for limbic-predominant amnestic neurodegenerative syndrome (LANS) provide a framework for neurologists and other experts to classify the condition and offer a more precise diagnosis and potential treatments.

“In our clinical work, we see patients whose memory symptoms appear to mimic Alzheimer’s disease, but when you look at their brain imaging or biomarkers, it’s clear they don’t have Alzheimer’s. Until now, there has not been a specific medical diagnosis to point to, but now we can offer them some answers,” senior investigator David T. Jones, MD, said in a release.

The proposed criteria and the research behind it were published online in Brain Communications and will be presented at the Alzheimer›s Association International Conference in Philadelphia.
 

Already in Use

Predominant limbic degeneration has been linked to various underlying etiologies, older age, predominant impairment of episodic memory, and slow clinical progression, the investigators noted. However, they added, the neurologic syndrome associated with predominant limbic degeneration is undefined.

Developing clinical criteria and validating them “is critical to distinguish such a syndrome from those originating from neocortical degeneration, which may differ in underlying etiology, disease course, and therapeutic needs,” the investigators wrote.

The newly proposed clinical criteria apply to LANS, which is “highly associated with limbic-predominant age-related TDP-43 encephalopathy but also other pathologic entities.”

The criteria incorporate core, standard, and advanced features including older age at evaluation, mild clinical syndrome, disproportionate hippocampal atrophy, impaired semantic memory, limbic hypometabolism, absence of endocortical degeneration, and low likelihood of neocortical tau with highest, high, moderate, and low degrees of certainty.

“A detailed history of the clinical symptoms, which may be supported by neuropsychological testing, with the observation of disproportionate hippocampal atrophy and limbic degeneration on MRI/FDG yields a high confidence in a diagnosis of LANS, where the most likely symptom-driving proteinopathy is TDP-43 and not Alzheimer’s associated proteins,” the first author, Nick Corriveau-Lecavalier, PhD, assistant professor of neurology and psychology at Mayo Clinic, Rochester, Minnesota, told this news organization.

To validate the criteria, the investigators screened autopsied patients from Mayo Clinic and Alzheimer’s Disease Neuroimaging Initiative cohorts and applied the criteria to those with a predominant amnestic syndrome and those who had AD neuropathologic change, limbic-predominant age-related TDP-43 encephalopathy, or both pathologies at autopsy.

“The criteria effectively categorized these cases, with Alzheimer’s disease having the lowest likelihoods, limbic-predominant age-related TDP-43 encephalopathy patients having the highest likelihoods, and patients with both pathologies having intermediate likelihoods,” the investigators reported.

“Patients with high likelihoods had a milder and slower clinical course and more severe temporo-limbic degeneration compared to those with low likelihoods,” they added.

Dr. Corriveau-Lecavalier said the team is currently analyzing longitudinal cognitive and imaging trajectories in LANS over several years. “This will help us better understand how LANS and Alzheimer’s differ in their sequence of symptoms over time.”

It is important to understand that memory symptoms in old age are not “unequivocally” driven by Alzheimer’s and that LANS progresses more slowly and has a better prognosis than AD, he noted.

In addition, in vivo markers of TDP-43 are “on the horizon and can hopefully make their way to human research settings soon. This will help better understand the underlying molecular etiologies causing LANS and associated symptoms,” he said.

Dr. Corriveau-Lecavalier said the LANS criteria are ready for clinical use by experts in neurologic care. These criteria can be used to inform not only diagnosis but also prognosis, where this syndrome is associated with slow and mild progression and a memory-dominant profile.

He added that “the new criteria are also routinely used in our practice to make decisions about anti-amyloid treatment eligibility.”

Commenting on the research for this news organization, Rebecca M. Edelmayer, PhD, Alzheimer’s Association senior director of scientific engagement, said the research “exemplifies the great need to develop objective criteria for diagnosis and staging of Alzheimer’s and all other types of dementia and to create an integrated biological and clinical staging scheme that can be used effectively by physicians.”

“Advances in biomarkers will help to differentiate all types of dementia when incorporated into the diagnostic workup, but until those tools are available, a more succinct clinical criteria for diagnosis can be used to support a more personalized medicine approach to treatment, care, and enrollment into clinical studies,” said Dr. Edelmayer, who wasn’t involved in the research.

The research was funded in part by the National Institutes of Health and by the Robert Wood Johnson Foundation, the Elsie & Marvin Dekelboum Family Foundation, the Liston Family Foundation, the Edson Family, the Gerald A. and Henrietta Rauenhorst Foundation, and the Foundation Dr Corinne Schuler. Dr. Corriveau-Lecavalier and Dr. Edelmayer had no relevant conflicts of interest.

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

Proposed clinical criteria for a memory loss disorder that is often misdiagnosed as Alzheimer’s disease (AD) have been published.

The new criteria for limbic-predominant amnestic neurodegenerative syndrome (LANS) provide a framework for neurologists and other experts to classify the condition and offer a more precise diagnosis and potential treatments.

“In our clinical work, we see patients whose memory symptoms appear to mimic Alzheimer’s disease, but when you look at their brain imaging or biomarkers, it’s clear they don’t have Alzheimer’s. Until now, there has not been a specific medical diagnosis to point to, but now we can offer them some answers,” senior investigator David T. Jones, MD, said in a release.

The proposed criteria and the research behind it were published online in Brain Communications and will be presented at the Alzheimer›s Association International Conference in Philadelphia.
 

Already in Use

Predominant limbic degeneration has been linked to various underlying etiologies, older age, predominant impairment of episodic memory, and slow clinical progression, the investigators noted. However, they added, the neurologic syndrome associated with predominant limbic degeneration is undefined.

Developing clinical criteria and validating them “is critical to distinguish such a syndrome from those originating from neocortical degeneration, which may differ in underlying etiology, disease course, and therapeutic needs,” the investigators wrote.

The newly proposed clinical criteria apply to LANS, which is “highly associated with limbic-predominant age-related TDP-43 encephalopathy but also other pathologic entities.”

The criteria incorporate core, standard, and advanced features including older age at evaluation, mild clinical syndrome, disproportionate hippocampal atrophy, impaired semantic memory, limbic hypometabolism, absence of endocortical degeneration, and low likelihood of neocortical tau with highest, high, moderate, and low degrees of certainty.

“A detailed history of the clinical symptoms, which may be supported by neuropsychological testing, with the observation of disproportionate hippocampal atrophy and limbic degeneration on MRI/FDG yields a high confidence in a diagnosis of LANS, where the most likely symptom-driving proteinopathy is TDP-43 and not Alzheimer’s associated proteins,” the first author, Nick Corriveau-Lecavalier, PhD, assistant professor of neurology and psychology at Mayo Clinic, Rochester, Minnesota, told this news organization.

To validate the criteria, the investigators screened autopsied patients from Mayo Clinic and Alzheimer’s Disease Neuroimaging Initiative cohorts and applied the criteria to those with a predominant amnestic syndrome and those who had AD neuropathologic change, limbic-predominant age-related TDP-43 encephalopathy, or both pathologies at autopsy.

“The criteria effectively categorized these cases, with Alzheimer’s disease having the lowest likelihoods, limbic-predominant age-related TDP-43 encephalopathy patients having the highest likelihoods, and patients with both pathologies having intermediate likelihoods,” the investigators reported.

“Patients with high likelihoods had a milder and slower clinical course and more severe temporo-limbic degeneration compared to those with low likelihoods,” they added.

Dr. Corriveau-Lecavalier said the team is currently analyzing longitudinal cognitive and imaging trajectories in LANS over several years. “This will help us better understand how LANS and Alzheimer’s differ in their sequence of symptoms over time.”

It is important to understand that memory symptoms in old age are not “unequivocally” driven by Alzheimer’s and that LANS progresses more slowly and has a better prognosis than AD, he noted.

In addition, in vivo markers of TDP-43 are “on the horizon and can hopefully make their way to human research settings soon. This will help better understand the underlying molecular etiologies causing LANS and associated symptoms,” he said.

Dr. Corriveau-Lecavalier said the LANS criteria are ready for clinical use by experts in neurologic care. These criteria can be used to inform not only diagnosis but also prognosis, where this syndrome is associated with slow and mild progression and a memory-dominant profile.

He added that “the new criteria are also routinely used in our practice to make decisions about anti-amyloid treatment eligibility.”

Commenting on the research for this news organization, Rebecca M. Edelmayer, PhD, Alzheimer’s Association senior director of scientific engagement, said the research “exemplifies the great need to develop objective criteria for diagnosis and staging of Alzheimer’s and all other types of dementia and to create an integrated biological and clinical staging scheme that can be used effectively by physicians.”

“Advances in biomarkers will help to differentiate all types of dementia when incorporated into the diagnostic workup, but until those tools are available, a more succinct clinical criteria for diagnosis can be used to support a more personalized medicine approach to treatment, care, and enrollment into clinical studies,” said Dr. Edelmayer, who wasn’t involved in the research.

The research was funded in part by the National Institutes of Health and by the Robert Wood Johnson Foundation, the Elsie & Marvin Dekelboum Family Foundation, the Liston Family Foundation, the Edson Family, the Gerald A. and Henrietta Rauenhorst Foundation, and the Foundation Dr Corinne Schuler. Dr. Corriveau-Lecavalier and Dr. Edelmayer had no relevant conflicts of interest.

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

Proposed clinical criteria for a memory loss disorder that is often misdiagnosed as Alzheimer’s disease (AD) have been published.

The new criteria for limbic-predominant amnestic neurodegenerative syndrome (LANS) provide a framework for neurologists and other experts to classify the condition and offer a more precise diagnosis and potential treatments.

“In our clinical work, we see patients whose memory symptoms appear to mimic Alzheimer’s disease, but when you look at their brain imaging or biomarkers, it’s clear they don’t have Alzheimer’s. Until now, there has not been a specific medical diagnosis to point to, but now we can offer them some answers,” senior investigator David T. Jones, MD, said in a release.

The proposed criteria and the research behind it were published online in Brain Communications and will be presented at the Alzheimer›s Association International Conference in Philadelphia.
 

Already in Use

Predominant limbic degeneration has been linked to various underlying etiologies, older age, predominant impairment of episodic memory, and slow clinical progression, the investigators noted. However, they added, the neurologic syndrome associated with predominant limbic degeneration is undefined.

Developing clinical criteria and validating them “is critical to distinguish such a syndrome from those originating from neocortical degeneration, which may differ in underlying etiology, disease course, and therapeutic needs,” the investigators wrote.

The newly proposed clinical criteria apply to LANS, which is “highly associated with limbic-predominant age-related TDP-43 encephalopathy but also other pathologic entities.”

The criteria incorporate core, standard, and advanced features including older age at evaluation, mild clinical syndrome, disproportionate hippocampal atrophy, impaired semantic memory, limbic hypometabolism, absence of endocortical degeneration, and low likelihood of neocortical tau with highest, high, moderate, and low degrees of certainty.

“A detailed history of the clinical symptoms, which may be supported by neuropsychological testing, with the observation of disproportionate hippocampal atrophy and limbic degeneration on MRI/FDG yields a high confidence in a diagnosis of LANS, where the most likely symptom-driving proteinopathy is TDP-43 and not Alzheimer’s associated proteins,” the first author, Nick Corriveau-Lecavalier, PhD, assistant professor of neurology and psychology at Mayo Clinic, Rochester, Minnesota, told this news organization.

To validate the criteria, the investigators screened autopsied patients from Mayo Clinic and Alzheimer’s Disease Neuroimaging Initiative cohorts and applied the criteria to those with a predominant amnestic syndrome and those who had AD neuropathologic change, limbic-predominant age-related TDP-43 encephalopathy, or both pathologies at autopsy.

“The criteria effectively categorized these cases, with Alzheimer’s disease having the lowest likelihoods, limbic-predominant age-related TDP-43 encephalopathy patients having the highest likelihoods, and patients with both pathologies having intermediate likelihoods,” the investigators reported.

“Patients with high likelihoods had a milder and slower clinical course and more severe temporo-limbic degeneration compared to those with low likelihoods,” they added.

Dr. Corriveau-Lecavalier said the team is currently analyzing longitudinal cognitive and imaging trajectories in LANS over several years. “This will help us better understand how LANS and Alzheimer’s differ in their sequence of symptoms over time.”

It is important to understand that memory symptoms in old age are not “unequivocally” driven by Alzheimer’s and that LANS progresses more slowly and has a better prognosis than AD, he noted.

In addition, in vivo markers of TDP-43 are “on the horizon and can hopefully make their way to human research settings soon. This will help better understand the underlying molecular etiologies causing LANS and associated symptoms,” he said.

Dr. Corriveau-Lecavalier said the LANS criteria are ready for clinical use by experts in neurologic care. These criteria can be used to inform not only diagnosis but also prognosis, where this syndrome is associated with slow and mild progression and a memory-dominant profile.

He added that “the new criteria are also routinely used in our practice to make decisions about anti-amyloid treatment eligibility.”

Commenting on the research for this news organization, Rebecca M. Edelmayer, PhD, Alzheimer’s Association senior director of scientific engagement, said the research “exemplifies the great need to develop objective criteria for diagnosis and staging of Alzheimer’s and all other types of dementia and to create an integrated biological and clinical staging scheme that can be used effectively by physicians.”

“Advances in biomarkers will help to differentiate all types of dementia when incorporated into the diagnostic workup, but until those tools are available, a more succinct clinical criteria for diagnosis can be used to support a more personalized medicine approach to treatment, care, and enrollment into clinical studies,” said Dr. Edelmayer, who wasn’t involved in the research.

The research was funded in part by the National Institutes of Health and by the Robert Wood Johnson Foundation, the Elsie & Marvin Dekelboum Family Foundation, the Liston Family Foundation, the Edson Family, the Gerald A. and Henrietta Rauenhorst Foundation, and the Foundation Dr Corinne Schuler. Dr. Corriveau-Lecavalier and Dr. Edelmayer had no relevant conflicts of interest.

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

This transcript has been edited for clarity. 

Rachel S. Rubin, MD: I have an interesting topic for you — kind of shocking, actually. Some of you may have read a story earlier this year in The New York Times about the alarming rise among young people of choking or strangulation during sex. I spoke recently with Dr. Debby Herbenick about this concerning and violent trend. Dr. Herbenick is a well-known sexuality researcher and professor at the Indiana University School of Public Health. Welcome, Dr. Herbenick. Can you tell us about your research into this new trend?

Debby Herbenick, PhD: This is some of the most important research that I’ve done. I’ve been studying sexual behaviors and trends for about 14 years in terms of nationally representative studies that we do. Over time, we noticed a trend of increasing prevalence of rough sex practices. 

Now, there’s always been a lot of sexual diversity in the world throughout history. But the main trend that we have focused on in recent years that is important for everyone in medicine to know about is this rapid increase — actually, a really big increase — in what people call “sexual choking,” even though it’s a form of strangulation. The increase is mostly seen in teenagers and young adults. 

We’ve done US nationally representative surveys as well as college campus representative surveys. We find that consistently across four campus representative surveys that 64% of women report having ever been choked during sex, and around 1 in 3 women (aged 18-24 years) throughout the whole country report having been choked during their most recent sexual activity with another person. They call it choking, but because it involves usually one hand — sometimes two hands or a forearm or an object, like a belt or a cord to tie around the neck — it is technically strangulation, because it’s external pressure to the neck to reduce or stop airflow or blood flow. 

Dr. Rubin: These numbers are staggering, right? Everyone listening now is taking care of someone who has been strangled as a form of sexual pleasure. What does this mean from a safety perspective? And as doctors who are working these patients up for migraines and other health problems, what is the research showing? 

Dr. Herbenick: We certainly are seeing people report recurrent headaches and ringing in the ears. There are things we’ve just barely scratched the surface on. Those of us working in this space believe that for anybody coming in for an unexplained stroke (for example, under age 50), you might consider some imaging to see if they have a dissection. We are hearing about people who, when you really probe to find out whether they’ve had pressure on the neck, they report that indeed that they have. So, we have to be thinking about neurologic symptoms. We know that they’re experiencing these at a pretty high rate. 

For people who are engaging in these practices, they should know about the health risks, but we find that most don’t. They may have heard that if it’s really intense high pressure, that in rare cases people can die, but most have never heard of anything in between. So, they’re not necessarily connecting their voice hoarseness, or the recurrent headaches or the sensitivity to light they are having, to an experience of being choked. We need to be paying attention to neurologic symptoms. 

Most physicians I speak with at conferences say that where they feel like they can step into this conversation is through anticipatory guidance and letting their patients know that they may have heard about this trend, and a lot of people are talking about the health consequences, and I want to share some information with you — not coming at it from a place of shame or judgment, but providing some information so that [patients] actually get some medical facts about this that could be lifesaving. 

Dr. Rubin: I see such a big gap in my medical training. I was taught to say, “Hey, do you smoke, do you drink, do you do drugs? Do you have sex? Men, women, or both?”And that’s it. And then maybe use birth control, and don’t get an STD, thinking about herpes, syphilis, gonorrhea, and chlamydia. We weren’t really trained to talk to patients about what kind of sex they are having, or how to talk to patients in a way that is open-minded but also safety-conscious and how the concept of safe sex is more than wear a condom and use birth control.

This idea of rough sex practices and how to talk to teenagers — maybe our pediatricians should be talking about this. Where do we start in terms of how to bring up these conversations and with what level of detail? 

Dr. Herbenick: We find that some young people are already being asked about some of the effects that might be showing on their bodies. It might be that their provider notices some bruising, or marks on their bodies from other types of rough sex practices like hitting and spanking. So that could be an entry point there. Choking is far more prevalent than slapping, so if you’re seeing some marks on the body, then it’s also a good time to ask about other practices they might be engaging in, especially higher risk ones like choking or strangulation. It’s offering some information and even saying, “Look, I’m not here to shame or judge you. I just want you to have some information about this” and giving them an opportunity to ask questions, too. 

We have found that almost nobody talks with their nurse or doctor, even if they have symptoms after being choked or strangled during sex. Just 1% of women with choking-related symptoms, 7% of men, and far fewer trans and nonbinary young people report talking with a nurse or doctor, mostly because they say it doesn’t seem like a big deal. The symptoms got better quickly. Sometimes they’re afraid of being shamed for their sexual behavior, and that’s why they say they don’t talk with somebody. 

They need some type of open-door anticipatory guidance as a way forward. Not everyone is comfortable directly asking whether a patient is engaging in this, but at least letting people know that you’ve heard of this behavior and providing some medical facts can give us a step forward with creating these conversations. 

Dr. Rubin: Can you tell us where is this research going in terms of next steps? Other things that you’re looking at? And what are you excited about? 

Dr. Herbenick: I’m excited about some work I did with a collaborator and colleague of mine, Dr. Keisuke Kawata, that he led a couple of years ago. He’s a neuroscientist. We were looking at potential cumulative effects on the brain. Now we’re taking some of that research into its next steps. We’re also doing more focused studies on other health consequences and hopefully finding out how we can test different educational messages and get people to learn more fact-based information about this, and then see if that is effective in prevention. 

Dr. Rubin: It sounds like a public health campaign is really needed about how to get the word out there about the health consequences of these activities. We’re asking people often enough. In my clinic, I try to keep it open-ended — tell me what sex looks like. What does it look like, and what do you want it to look like? Because I see a lot of people with problems, but if they don’t bring it to me, I don’t necessarily bring it up to them. Until I heard your lecture, and I thought, oh my gosh, I’m not even asking the right questions. Are you hopeful that there will be more public health messaging out there? 

Dr. Herbenick: I am. Years ago, when the child and adolescent choking game became a thing, the Centers for Disease Control and Prevention (CDC) issued reports about it and warnings to parents. And this is a far, far higher prevalence than that ever was. So, I would love to see organizations like the CDC and medical groups getting involved and educating their members and making statements. This is really impacting a huge generation of girls and women, because when it happens during sex between women and men, the choking is mostly happening to the girls and women. It’s also prevalent among sexual minority individuals. But we are talking about this whole generation of young women and what’s happening to their bodies and their brain health. We really need to step into this conversation. 

Dr. Rubin: Very few of us are sexual medicine–trained physicians, and very few of us feel confident and comfortable talking about sexual health issues. But people are getting hurt. People are having real consequences of these behaviors because of our lack of education, knowledge, and even discussion around it. So thank you for doing this research, because had you not done this research, we wouldn’t have found out that 64% of people are engaging in these types of activities. That is not rare.

Dr. Rubin is an assistant clinical professor, Department of Urology, at Georgetown University, Washington. She reported conflicts of interest with Sprout, Maternal Medical, Absorption Pharmaceuticals, GSK, and Endo.

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

This transcript has been edited for clarity. 

Rachel S. Rubin, MD: I have an interesting topic for you — kind of shocking, actually. Some of you may have read a story earlier this year in The New York Times about the alarming rise among young people of choking or strangulation during sex. I spoke recently with Dr. Debby Herbenick about this concerning and violent trend. Dr. Herbenick is a well-known sexuality researcher and professor at the Indiana University School of Public Health. Welcome, Dr. Herbenick. Can you tell us about your research into this new trend?

Debby Herbenick, PhD: This is some of the most important research that I’ve done. I’ve been studying sexual behaviors and trends for about 14 years in terms of nationally representative studies that we do. Over time, we noticed a trend of increasing prevalence of rough sex practices. 

Now, there’s always been a lot of sexual diversity in the world throughout history. But the main trend that we have focused on in recent years that is important for everyone in medicine to know about is this rapid increase — actually, a really big increase — in what people call “sexual choking,” even though it’s a form of strangulation. The increase is mostly seen in teenagers and young adults. 

We’ve done US nationally representative surveys as well as college campus representative surveys. We find that consistently across four campus representative surveys that 64% of women report having ever been choked during sex, and around 1 in 3 women (aged 18-24 years) throughout the whole country report having been choked during their most recent sexual activity with another person. They call it choking, but because it involves usually one hand — sometimes two hands or a forearm or an object, like a belt or a cord to tie around the neck — it is technically strangulation, because it’s external pressure to the neck to reduce or stop airflow or blood flow. 

Dr. Rubin: These numbers are staggering, right? Everyone listening now is taking care of someone who has been strangled as a form of sexual pleasure. What does this mean from a safety perspective? And as doctors who are working these patients up for migraines and other health problems, what is the research showing? 

Dr. Herbenick: We certainly are seeing people report recurrent headaches and ringing in the ears. There are things we’ve just barely scratched the surface on. Those of us working in this space believe that for anybody coming in for an unexplained stroke (for example, under age 50), you might consider some imaging to see if they have a dissection. We are hearing about people who, when you really probe to find out whether they’ve had pressure on the neck, they report that indeed that they have. So, we have to be thinking about neurologic symptoms. We know that they’re experiencing these at a pretty high rate. 

For people who are engaging in these practices, they should know about the health risks, but we find that most don’t. They may have heard that if it’s really intense high pressure, that in rare cases people can die, but most have never heard of anything in between. So, they’re not necessarily connecting their voice hoarseness, or the recurrent headaches or the sensitivity to light they are having, to an experience of being choked. We need to be paying attention to neurologic symptoms. 

Most physicians I speak with at conferences say that where they feel like they can step into this conversation is through anticipatory guidance and letting their patients know that they may have heard about this trend, and a lot of people are talking about the health consequences, and I want to share some information with you — not coming at it from a place of shame or judgment, but providing some information so that [patients] actually get some medical facts about this that could be lifesaving. 

Dr. Rubin: I see such a big gap in my medical training. I was taught to say, “Hey, do you smoke, do you drink, do you do drugs? Do you have sex? Men, women, or both?”And that’s it. And then maybe use birth control, and don’t get an STD, thinking about herpes, syphilis, gonorrhea, and chlamydia. We weren’t really trained to talk to patients about what kind of sex they are having, or how to talk to patients in a way that is open-minded but also safety-conscious and how the concept of safe sex is more than wear a condom and use birth control.

This idea of rough sex practices and how to talk to teenagers — maybe our pediatricians should be talking about this. Where do we start in terms of how to bring up these conversations and with what level of detail? 

Dr. Herbenick: We find that some young people are already being asked about some of the effects that might be showing on their bodies. It might be that their provider notices some bruising, or marks on their bodies from other types of rough sex practices like hitting and spanking. So that could be an entry point there. Choking is far more prevalent than slapping, so if you’re seeing some marks on the body, then it’s also a good time to ask about other practices they might be engaging in, especially higher risk ones like choking or strangulation. It’s offering some information and even saying, “Look, I’m not here to shame or judge you. I just want you to have some information about this” and giving them an opportunity to ask questions, too. 

We have found that almost nobody talks with their nurse or doctor, even if they have symptoms after being choked or strangled during sex. Just 1% of women with choking-related symptoms, 7% of men, and far fewer trans and nonbinary young people report talking with a nurse or doctor, mostly because they say it doesn’t seem like a big deal. The symptoms got better quickly. Sometimes they’re afraid of being shamed for their sexual behavior, and that’s why they say they don’t talk with somebody. 

They need some type of open-door anticipatory guidance as a way forward. Not everyone is comfortable directly asking whether a patient is engaging in this, but at least letting people know that you’ve heard of this behavior and providing some medical facts can give us a step forward with creating these conversations. 

Dr. Rubin: Can you tell us where is this research going in terms of next steps? Other things that you’re looking at? And what are you excited about? 

Dr. Herbenick: I’m excited about some work I did with a collaborator and colleague of mine, Dr. Keisuke Kawata, that he led a couple of years ago. He’s a neuroscientist. We were looking at potential cumulative effects on the brain. Now we’re taking some of that research into its next steps. We’re also doing more focused studies on other health consequences and hopefully finding out how we can test different educational messages and get people to learn more fact-based information about this, and then see if that is effective in prevention. 

Dr. Rubin: It sounds like a public health campaign is really needed about how to get the word out there about the health consequences of these activities. We’re asking people often enough. In my clinic, I try to keep it open-ended — tell me what sex looks like. What does it look like, and what do you want it to look like? Because I see a lot of people with problems, but if they don’t bring it to me, I don’t necessarily bring it up to them. Until I heard your lecture, and I thought, oh my gosh, I’m not even asking the right questions. Are you hopeful that there will be more public health messaging out there? 

Dr. Herbenick: I am. Years ago, when the child and adolescent choking game became a thing, the Centers for Disease Control and Prevention (CDC) issued reports about it and warnings to parents. And this is a far, far higher prevalence than that ever was. So, I would love to see organizations like the CDC and medical groups getting involved and educating their members and making statements. This is really impacting a huge generation of girls and women, because when it happens during sex between women and men, the choking is mostly happening to the girls and women. It’s also prevalent among sexual minority individuals. But we are talking about this whole generation of young women and what’s happening to their bodies and their brain health. We really need to step into this conversation. 

Dr. Rubin: Very few of us are sexual medicine–trained physicians, and very few of us feel confident and comfortable talking about sexual health issues. But people are getting hurt. People are having real consequences of these behaviors because of our lack of education, knowledge, and even discussion around it. So thank you for doing this research, because had you not done this research, we wouldn’t have found out that 64% of people are engaging in these types of activities. That is not rare.

Dr. Rubin is an assistant clinical professor, Department of Urology, at Georgetown University, Washington. She reported conflicts of interest with Sprout, Maternal Medical, Absorption Pharmaceuticals, GSK, and Endo.

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

This transcript has been edited for clarity. 

Rachel S. Rubin, MD: I have an interesting topic for you — kind of shocking, actually. Some of you may have read a story earlier this year in The New York Times about the alarming rise among young people of choking or strangulation during sex. I spoke recently with Dr. Debby Herbenick about this concerning and violent trend. Dr. Herbenick is a well-known sexuality researcher and professor at the Indiana University School of Public Health. Welcome, Dr. Herbenick. Can you tell us about your research into this new trend?

Debby Herbenick, PhD: This is some of the most important research that I’ve done. I’ve been studying sexual behaviors and trends for about 14 years in terms of nationally representative studies that we do. Over time, we noticed a trend of increasing prevalence of rough sex practices. 

Now, there’s always been a lot of sexual diversity in the world throughout history. But the main trend that we have focused on in recent years that is important for everyone in medicine to know about is this rapid increase — actually, a really big increase — in what people call “sexual choking,” even though it’s a form of strangulation. The increase is mostly seen in teenagers and young adults. 

We’ve done US nationally representative surveys as well as college campus representative surveys. We find that consistently across four campus representative surveys that 64% of women report having ever been choked during sex, and around 1 in 3 women (aged 18-24 years) throughout the whole country report having been choked during their most recent sexual activity with another person. They call it choking, but because it involves usually one hand — sometimes two hands or a forearm or an object, like a belt or a cord to tie around the neck — it is technically strangulation, because it’s external pressure to the neck to reduce or stop airflow or blood flow. 

Dr. Rubin: These numbers are staggering, right? Everyone listening now is taking care of someone who has been strangled as a form of sexual pleasure. What does this mean from a safety perspective? And as doctors who are working these patients up for migraines and other health problems, what is the research showing? 

Dr. Herbenick: We certainly are seeing people report recurrent headaches and ringing in the ears. There are things we’ve just barely scratched the surface on. Those of us working in this space believe that for anybody coming in for an unexplained stroke (for example, under age 50), you might consider some imaging to see if they have a dissection. We are hearing about people who, when you really probe to find out whether they’ve had pressure on the neck, they report that indeed that they have. So, we have to be thinking about neurologic symptoms. We know that they’re experiencing these at a pretty high rate. 

For people who are engaging in these practices, they should know about the health risks, but we find that most don’t. They may have heard that if it’s really intense high pressure, that in rare cases people can die, but most have never heard of anything in between. So, they’re not necessarily connecting their voice hoarseness, or the recurrent headaches or the sensitivity to light they are having, to an experience of being choked. We need to be paying attention to neurologic symptoms. 

Most physicians I speak with at conferences say that where they feel like they can step into this conversation is through anticipatory guidance and letting their patients know that they may have heard about this trend, and a lot of people are talking about the health consequences, and I want to share some information with you — not coming at it from a place of shame or judgment, but providing some information so that [patients] actually get some medical facts about this that could be lifesaving. 

Dr. Rubin: I see such a big gap in my medical training. I was taught to say, “Hey, do you smoke, do you drink, do you do drugs? Do you have sex? Men, women, or both?”And that’s it. And then maybe use birth control, and don’t get an STD, thinking about herpes, syphilis, gonorrhea, and chlamydia. We weren’t really trained to talk to patients about what kind of sex they are having, or how to talk to patients in a way that is open-minded but also safety-conscious and how the concept of safe sex is more than wear a condom and use birth control.

This idea of rough sex practices and how to talk to teenagers — maybe our pediatricians should be talking about this. Where do we start in terms of how to bring up these conversations and with what level of detail? 

Dr. Herbenick: We find that some young people are already being asked about some of the effects that might be showing on their bodies. It might be that their provider notices some bruising, or marks on their bodies from other types of rough sex practices like hitting and spanking. So that could be an entry point there. Choking is far more prevalent than slapping, so if you’re seeing some marks on the body, then it’s also a good time to ask about other practices they might be engaging in, especially higher risk ones like choking or strangulation. It’s offering some information and even saying, “Look, I’m not here to shame or judge you. I just want you to have some information about this” and giving them an opportunity to ask questions, too. 

We have found that almost nobody talks with their nurse or doctor, even if they have symptoms after being choked or strangled during sex. Just 1% of women with choking-related symptoms, 7% of men, and far fewer trans and nonbinary young people report talking with a nurse or doctor, mostly because they say it doesn’t seem like a big deal. The symptoms got better quickly. Sometimes they’re afraid of being shamed for their sexual behavior, and that’s why they say they don’t talk with somebody. 

They need some type of open-door anticipatory guidance as a way forward. Not everyone is comfortable directly asking whether a patient is engaging in this, but at least letting people know that you’ve heard of this behavior and providing some medical facts can give us a step forward with creating these conversations. 

Dr. Rubin: Can you tell us where is this research going in terms of next steps? Other things that you’re looking at? And what are you excited about? 

Dr. Herbenick: I’m excited about some work I did with a collaborator and colleague of mine, Dr. Keisuke Kawata, that he led a couple of years ago. He’s a neuroscientist. We were looking at potential cumulative effects on the brain. Now we’re taking some of that research into its next steps. We’re also doing more focused studies on other health consequences and hopefully finding out how we can test different educational messages and get people to learn more fact-based information about this, and then see if that is effective in prevention. 

Dr. Rubin: It sounds like a public health campaign is really needed about how to get the word out there about the health consequences of these activities. We’re asking people often enough. In my clinic, I try to keep it open-ended — tell me what sex looks like. What does it look like, and what do you want it to look like? Because I see a lot of people with problems, but if they don’t bring it to me, I don’t necessarily bring it up to them. Until I heard your lecture, and I thought, oh my gosh, I’m not even asking the right questions. Are you hopeful that there will be more public health messaging out there? 

Dr. Herbenick: I am. Years ago, when the child and adolescent choking game became a thing, the Centers for Disease Control and Prevention (CDC) issued reports about it and warnings to parents. And this is a far, far higher prevalence than that ever was. So, I would love to see organizations like the CDC and medical groups getting involved and educating their members and making statements. This is really impacting a huge generation of girls and women, because when it happens during sex between women and men, the choking is mostly happening to the girls and women. It’s also prevalent among sexual minority individuals. But we are talking about this whole generation of young women and what’s happening to their bodies and their brain health. We really need to step into this conversation. 

Dr. Rubin: Very few of us are sexual medicine–trained physicians, and very few of us feel confident and comfortable talking about sexual health issues. But people are getting hurt. People are having real consequences of these behaviors because of our lack of education, knowledge, and even discussion around it. So thank you for doing this research, because had you not done this research, we wouldn’t have found out that 64% of people are engaging in these types of activities. That is not rare.

Dr. Rubin is an assistant clinical professor, Department of Urology, at Georgetown University, Washington. She reported conflicts of interest with Sprout, Maternal Medical, Absorption Pharmaceuticals, GSK, and Endo.

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

The oral calcitonin gene-related peptide receptor antagonist atogepant is effective in preventing rebound headache related to medication overuse in patients with chronic migraine (CM), new research suggested.

Results of a subgroup analysis of a phase 3, 12-week randomized, double-blind, placebo-controlled trial showed up to a 62% reduction in the proportion of atogepant-treated participants who met acute medication overuse criteria.

“Based on our findings, treatment with atogepant may potentially decrease the risk of developing rebound headache by reducing the use of pain medications,” principal investigator Peter Goadsby, MD, PhD, of King’s College London, London, England, said in a news release.

The study was published online in Neurology.
 

Effective Prevention Needed

Acute treatments for migraine can mitigate symptoms and reduce disability but can also be ineffective and even result in increased dosing and overuse of these medications, the investigators noted.

Acute medication overuse is defined as “taking simple analgesics for ≥ 15 days per month or taking triptans, ergots, opioids, or combinations of medications for ≥ 10 days per month.”

“There is a high prevalence of pain medication overuse among people with migraine as they try to manage what are often debilitating symptoms,” Dr. Goadsby said. “However, medication overuse can lead to more headaches, called rebound headaches, so more effective preventive treatments are needed.”

Atogepant was developed for migraine prevention in adults. It had been studied in the phase 3 PROGRESS trial, which showed it significantly reduced monthly migraine days (MMDs) compared with placebo during the 12-week trial.

The new subgroup analysis of the study focused specifically on the efficacy and safety of atogepant vs placebo in participants with CM with, and without, medication overuse.

Participants (mean age, 42.1 years; 87.6% women) were randomized to receive either atogepant 30 mg twice daily (n = 253), atogepant 60 mg once daily (n = 256), or placebo (n = 240), with baseline demographics and clinical characteristics similar across all treatment arms. A total of 66.2% met baseline acute medication overuse criteria.

Participants were asked to record migraine and headache experiences in an electronic diary.
 

‘Effective and Safe’

Participants in both atogepant groups experienced fewer monthly headache days (MHDs) than those in the placebo group, with a least squares mean difference (LSMD) of −2.7 (95% confidence interval [CI], −4.0 to −1.4) in the atogepant 30 mg twice daily group and −1.9 (95% CI, −3.2 to −0.6) in the atogepant 60 mg once daily group.

MHDs were also reduced in both treatment groups, with LSMDs of −2.8 (95% CI, −4.0 to −1.5) and −2.1 (95% CI, −3.3 to −0.8), respectively. Mean acute medication use days were lower in both the treatment groups, with LSMDs of −2.8 (95% CI, −4.1 to −1.6) and −2.6 (95% CI, −3.9 to −1.3), respectively.

A higher proportion of participants achieved a ≥ 50% reduction in MMDs with atogepant 30 mg twice daily (odds ratio [OR], 2.5; 95% CI, 1.5-4.0) and atogepant 60 mg once daily (OR, 2.3; 95% CI, 1.4-3.7).

Notably, the researchers found a 52.1%-61.9% reduction in the proportion of atogepant-treated participants meeting acute medication overuse criteria during the study period vs 38.3% in the placebo group.

Similar results were observed in the subgroup without acute medication overuse.

Treatment-emergent adverse events were reported by 55.8% of participants treated with atogepant 30 mg twice daily, 66.1% with atogepant 60 mg once daily, and 48.5% with placebo in the acute medication overuse subgroup, with similar reports in the non-overuse subgroup.

A limitation cited by the authors was that participants’ self-report of migraines and headaches via electronic diaries might have been inaccurate.

Nevertheless, they concluded that the results showed atogepant to be an “effective and safe” preventive treatment for patients with CM with, and without, acute medication overuse.

AbbVie funded this study and participated in the study design, research, analysis, data collection, interpretation of data, reviewing, and approval of the publication. No honoraria or payments were made for authorship. Dr. Goadsby received personal fees from AbbVie during the conduct of the study, and over the last 36 months, he received a research grant from Celgene; personal fees from Aeon Biopharma, Amgen, CoolTechLLC, Dr. Reddy’s, Eli Lilly and Company, Epalex, Lundbeck, Novartis, Pfizer, Praxis, Sanofi, Satsuma, ShiraTronics, Teva Pharmaceuticals, and Tremeau; personal fees for advice through Gerson Lehrman Group, Guidepoint, SAI Med Partners, and Vector Metric; fees for educational materials from CME Outfitters; and publishing royalties or fees from Massachusetts Medical Society, Oxford University Press, UpToDate, and Wolters Kluwer. The other authors’ disclosures are listed on the original paper.

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

The oral calcitonin gene-related peptide receptor antagonist atogepant is effective in preventing rebound headache related to medication overuse in patients with chronic migraine (CM), new research suggested.

Results of a subgroup analysis of a phase 3, 12-week randomized, double-blind, placebo-controlled trial showed up to a 62% reduction in the proportion of atogepant-treated participants who met acute medication overuse criteria.

“Based on our findings, treatment with atogepant may potentially decrease the risk of developing rebound headache by reducing the use of pain medications,” principal investigator Peter Goadsby, MD, PhD, of King’s College London, London, England, said in a news release.

The study was published online in Neurology.
 

Effective Prevention Needed

Acute treatments for migraine can mitigate symptoms and reduce disability but can also be ineffective and even result in increased dosing and overuse of these medications, the investigators noted.

Acute medication overuse is defined as “taking simple analgesics for ≥ 15 days per month or taking triptans, ergots, opioids, or combinations of medications for ≥ 10 days per month.”

“There is a high prevalence of pain medication overuse among people with migraine as they try to manage what are often debilitating symptoms,” Dr. Goadsby said. “However, medication overuse can lead to more headaches, called rebound headaches, so more effective preventive treatments are needed.”

Atogepant was developed for migraine prevention in adults. It had been studied in the phase 3 PROGRESS trial, which showed it significantly reduced monthly migraine days (MMDs) compared with placebo during the 12-week trial.

The new subgroup analysis of the study focused specifically on the efficacy and safety of atogepant vs placebo in participants with CM with, and without, medication overuse.

Participants (mean age, 42.1 years; 87.6% women) were randomized to receive either atogepant 30 mg twice daily (n = 253), atogepant 60 mg once daily (n = 256), or placebo (n = 240), with baseline demographics and clinical characteristics similar across all treatment arms. A total of 66.2% met baseline acute medication overuse criteria.

Participants were asked to record migraine and headache experiences in an electronic diary.
 

‘Effective and Safe’

Participants in both atogepant groups experienced fewer monthly headache days (MHDs) than those in the placebo group, with a least squares mean difference (LSMD) of −2.7 (95% confidence interval [CI], −4.0 to −1.4) in the atogepant 30 mg twice daily group and −1.9 (95% CI, −3.2 to −0.6) in the atogepant 60 mg once daily group.

MHDs were also reduced in both treatment groups, with LSMDs of −2.8 (95% CI, −4.0 to −1.5) and −2.1 (95% CI, −3.3 to −0.8), respectively. Mean acute medication use days were lower in both the treatment groups, with LSMDs of −2.8 (95% CI, −4.1 to −1.6) and −2.6 (95% CI, −3.9 to −1.3), respectively.

A higher proportion of participants achieved a ≥ 50% reduction in MMDs with atogepant 30 mg twice daily (odds ratio [OR], 2.5; 95% CI, 1.5-4.0) and atogepant 60 mg once daily (OR, 2.3; 95% CI, 1.4-3.7).

Notably, the researchers found a 52.1%-61.9% reduction in the proportion of atogepant-treated participants meeting acute medication overuse criteria during the study period vs 38.3% in the placebo group.

Similar results were observed in the subgroup without acute medication overuse.

Treatment-emergent adverse events were reported by 55.8% of participants treated with atogepant 30 mg twice daily, 66.1% with atogepant 60 mg once daily, and 48.5% with placebo in the acute medication overuse subgroup, with similar reports in the non-overuse subgroup.

A limitation cited by the authors was that participants’ self-report of migraines and headaches via electronic diaries might have been inaccurate.

Nevertheless, they concluded that the results showed atogepant to be an “effective and safe” preventive treatment for patients with CM with, and without, acute medication overuse.

AbbVie funded this study and participated in the study design, research, analysis, data collection, interpretation of data, reviewing, and approval of the publication. No honoraria or payments were made for authorship. Dr. Goadsby received personal fees from AbbVie during the conduct of the study, and over the last 36 months, he received a research grant from Celgene; personal fees from Aeon Biopharma, Amgen, CoolTechLLC, Dr. Reddy’s, Eli Lilly and Company, Epalex, Lundbeck, Novartis, Pfizer, Praxis, Sanofi, Satsuma, ShiraTronics, Teva Pharmaceuticals, and Tremeau; personal fees for advice through Gerson Lehrman Group, Guidepoint, SAI Med Partners, and Vector Metric; fees for educational materials from CME Outfitters; and publishing royalties or fees from Massachusetts Medical Society, Oxford University Press, UpToDate, and Wolters Kluwer. The other authors’ disclosures are listed on the original paper.

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

The oral calcitonin gene-related peptide receptor antagonist atogepant is effective in preventing rebound headache related to medication overuse in patients with chronic migraine (CM), new research suggested.

Results of a subgroup analysis of a phase 3, 12-week randomized, double-blind, placebo-controlled trial showed up to a 62% reduction in the proportion of atogepant-treated participants who met acute medication overuse criteria.

“Based on our findings, treatment with atogepant may potentially decrease the risk of developing rebound headache by reducing the use of pain medications,” principal investigator Peter Goadsby, MD, PhD, of King’s College London, London, England, said in a news release.

The study was published online in Neurology.
 

Effective Prevention Needed

Acute treatments for migraine can mitigate symptoms and reduce disability but can also be ineffective and even result in increased dosing and overuse of these medications, the investigators noted.

Acute medication overuse is defined as “taking simple analgesics for ≥ 15 days per month or taking triptans, ergots, opioids, or combinations of medications for ≥ 10 days per month.”

“There is a high prevalence of pain medication overuse among people with migraine as they try to manage what are often debilitating symptoms,” Dr. Goadsby said. “However, medication overuse can lead to more headaches, called rebound headaches, so more effective preventive treatments are needed.”

Atogepant was developed for migraine prevention in adults. It had been studied in the phase 3 PROGRESS trial, which showed it significantly reduced monthly migraine days (MMDs) compared with placebo during the 12-week trial.

The new subgroup analysis of the study focused specifically on the efficacy and safety of atogepant vs placebo in participants with CM with, and without, medication overuse.

Participants (mean age, 42.1 years; 87.6% women) were randomized to receive either atogepant 30 mg twice daily (n = 253), atogepant 60 mg once daily (n = 256), or placebo (n = 240), with baseline demographics and clinical characteristics similar across all treatment arms. A total of 66.2% met baseline acute medication overuse criteria.

Participants were asked to record migraine and headache experiences in an electronic diary.
 

‘Effective and Safe’

Participants in both atogepant groups experienced fewer monthly headache days (MHDs) than those in the placebo group, with a least squares mean difference (LSMD) of −2.7 (95% confidence interval [CI], −4.0 to −1.4) in the atogepant 30 mg twice daily group and −1.9 (95% CI, −3.2 to −0.6) in the atogepant 60 mg once daily group.

MHDs were also reduced in both treatment groups, with LSMDs of −2.8 (95% CI, −4.0 to −1.5) and −2.1 (95% CI, −3.3 to −0.8), respectively. Mean acute medication use days were lower in both the treatment groups, with LSMDs of −2.8 (95% CI, −4.1 to −1.6) and −2.6 (95% CI, −3.9 to −1.3), respectively.

A higher proportion of participants achieved a ≥ 50% reduction in MMDs with atogepant 30 mg twice daily (odds ratio [OR], 2.5; 95% CI, 1.5-4.0) and atogepant 60 mg once daily (OR, 2.3; 95% CI, 1.4-3.7).

Notably, the researchers found a 52.1%-61.9% reduction in the proportion of atogepant-treated participants meeting acute medication overuse criteria during the study period vs 38.3% in the placebo group.

Similar results were observed in the subgroup without acute medication overuse.

Treatment-emergent adverse events were reported by 55.8% of participants treated with atogepant 30 mg twice daily, 66.1% with atogepant 60 mg once daily, and 48.5% with placebo in the acute medication overuse subgroup, with similar reports in the non-overuse subgroup.

A limitation cited by the authors was that participants’ self-report of migraines and headaches via electronic diaries might have been inaccurate.

Nevertheless, they concluded that the results showed atogepant to be an “effective and safe” preventive treatment for patients with CM with, and without, acute medication overuse.

AbbVie funded this study and participated in the study design, research, analysis, data collection, interpretation of data, reviewing, and approval of the publication. No honoraria or payments were made for authorship. Dr. Goadsby received personal fees from AbbVie during the conduct of the study, and over the last 36 months, he received a research grant from Celgene; personal fees from Aeon Biopharma, Amgen, CoolTechLLC, Dr. Reddy’s, Eli Lilly and Company, Epalex, Lundbeck, Novartis, Pfizer, Praxis, Sanofi, Satsuma, ShiraTronics, Teva Pharmaceuticals, and Tremeau; personal fees for advice through Gerson Lehrman Group, Guidepoint, SAI Med Partners, and Vector Metric; fees for educational materials from CME Outfitters; and publishing royalties or fees from Massachusetts Medical Society, Oxford University Press, UpToDate, and Wolters Kluwer. The other authors’ disclosures are listed on the original paper.

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

Moderate exercise in midlife is associated with a reduced risk for amyotrophic lateral sclerosis (ALS) later in life, but this benefit appears to be limited to men, findings from a large prospective study showed.

Men who reported moderate levels of physical activity had a 29% lower risk for ALS, whereas those with high levels of physical activity had a 41% lower risk for the disease.

The findings were published online in Neurology.
 

Conflicting Findings

Several famous athletes have died of ALS, including the baseball player Lou Gehrig (for whom the disease is named), football players Dwight Clark, Steve Gleason, and Kevin Turner, and the boxer Ezzard Charles. This has led some scientists to speculate that intense physical activity may play a role in the development of the disease.

Anders M. Vaage, MD, noted there have been conflicting findings in previous studies on the topic, with results showing both increased and reduced ALS risks with increasing levels of physical activity.

In one study, researchers followed more than 212,000 Swedish cross-country skiers and more than 500,000 Swedish individuals in the general population for 20 years and found that strenuous cross-country skiing was associated with a higher risk for ALS but only among the best skiers; recreational skiers appeared to have a reduced risk.

“Our study does not necessarily contradict previous studies with findings of an increased ALS risk with extreme or intense levels of physical activity in athletes, as this study reflects more moderate levels of physical activity and fitness in the total population,” said Dr. Vaage.

To further explore the association, the researchers followed 373,700 individuals who participated in a cardiovascular health survey for an average of 27 years. When the survey began, most participants were 40-42 years old.

Participants were followed until the date of ALS diagnosis, ALS death, death from other causes, emigration, or the end of study in August 2021.

Participants answered questions about physical activity levels, smoking status, and other issues relating to cardiovascular health, and participants’ resting heart rate was measured and divided into quartiles of 31-65 beats per minute (BPM), 66-74 BPM, 75-81 BPM, or 82-100 BPM.

Participants self-reported their physical activity over the past year, classifying it into one of four categories: Sedentary, at least 4 hours per week of walking or cycling, at least 4 hours per week of recreational sports or heavy gardening, or regular participation in intense training or sports competitions several times per week.

Only a few participants reported the highest level of physical activity, so researchers combined the third and fourth categories into a single high-activity group.

Of the total study cohort, 504 participants developed ALS. Of those who developed the disease, 59% were men.

Researchers found that of the 41,898 male participants with the highest level of physical activity, 63 developed ALS. In comparison, of the 76,769 male participants who reported an intermediate level of physical activity, 131 developed ALS. Among the 29,468 male participants who reported the lowest level of physical activity, 68 developed ALS.
 

No Link in Women?

After adjusting for smoking, body mass index, and other risk factors, investigators found that men with moderate physical activity levels had a 29% lower risk for ALS compared with those with low physical activity levels, whereas those with the highest activity levels had a 41% lower risk.

In addition, men in the lowest of the four categories of resting heart rate had a 32% reduced risk for ALS compared with men with a higher resting heart rate.

Investigators are unclear why there was a lack of association between physical activity and resting heart rate and ALS risk in women.

“There are known sex differences in ALS, which includes a sex ratio with male preponderance, and there are also sex differences in response to physical exercise. Perhaps underlying mechanisms herein can explain the difference observed between males and females in the study,” Dr. Vaage said. He noted that future research should explore this difference.

Study limitations included the absence of data on physical trauma and head trauma, which have been linked with increased ALS risk. In addition, there were no data on genotype.

In an accompanying editorial, Pamela Shaw, MD, and Johnathan Cooper-Knock, BMBCh, PhD, of the University of Sheffield, Sheffield, England, described the research as a “valuable contribution to the field and potentially provides some reassurance that mild/moderate levels of physical activity in middle age do not increase the risk for ALS but may instead have a beneficial protective effect.” 

Future research on exercise in ALS, they add, should consider sex differences, capture the most extreme physical activity levels, and identify any genetic factors that may mediate the association between intense exercise and ALS.

No targeted funding was reported. Dr. Vaage reported receiving funding from ALS Laboratory Group Norway.

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

Moderate exercise in midlife is associated with a reduced risk for amyotrophic lateral sclerosis (ALS) later in life, but this benefit appears to be limited to men, findings from a large prospective study showed.

Men who reported moderate levels of physical activity had a 29% lower risk for ALS, whereas those with high levels of physical activity had a 41% lower risk for the disease.

The findings were published online in Neurology.
 

Conflicting Findings

Several famous athletes have died of ALS, including the baseball player Lou Gehrig (for whom the disease is named), football players Dwight Clark, Steve Gleason, and Kevin Turner, and the boxer Ezzard Charles. This has led some scientists to speculate that intense physical activity may play a role in the development of the disease.

Anders M. Vaage, MD, noted there have been conflicting findings in previous studies on the topic, with results showing both increased and reduced ALS risks with increasing levels of physical activity.

In one study, researchers followed more than 212,000 Swedish cross-country skiers and more than 500,000 Swedish individuals in the general population for 20 years and found that strenuous cross-country skiing was associated with a higher risk for ALS but only among the best skiers; recreational skiers appeared to have a reduced risk.

“Our study does not necessarily contradict previous studies with findings of an increased ALS risk with extreme or intense levels of physical activity in athletes, as this study reflects more moderate levels of physical activity and fitness in the total population,” said Dr. Vaage.

To further explore the association, the researchers followed 373,700 individuals who participated in a cardiovascular health survey for an average of 27 years. When the survey began, most participants were 40-42 years old.

Participants were followed until the date of ALS diagnosis, ALS death, death from other causes, emigration, or the end of study in August 2021.

Participants answered questions about physical activity levels, smoking status, and other issues relating to cardiovascular health, and participants’ resting heart rate was measured and divided into quartiles of 31-65 beats per minute (BPM), 66-74 BPM, 75-81 BPM, or 82-100 BPM.

Participants self-reported their physical activity over the past year, classifying it into one of four categories: Sedentary, at least 4 hours per week of walking or cycling, at least 4 hours per week of recreational sports or heavy gardening, or regular participation in intense training or sports competitions several times per week.

Only a few participants reported the highest level of physical activity, so researchers combined the third and fourth categories into a single high-activity group.

Of the total study cohort, 504 participants developed ALS. Of those who developed the disease, 59% were men.

Researchers found that of the 41,898 male participants with the highest level of physical activity, 63 developed ALS. In comparison, of the 76,769 male participants who reported an intermediate level of physical activity, 131 developed ALS. Among the 29,468 male participants who reported the lowest level of physical activity, 68 developed ALS.
 

No Link in Women?

After adjusting for smoking, body mass index, and other risk factors, investigators found that men with moderate physical activity levels had a 29% lower risk for ALS compared with those with low physical activity levels, whereas those with the highest activity levels had a 41% lower risk.

In addition, men in the lowest of the four categories of resting heart rate had a 32% reduced risk for ALS compared with men with a higher resting heart rate.

Investigators are unclear why there was a lack of association between physical activity and resting heart rate and ALS risk in women.

“There are known sex differences in ALS, which includes a sex ratio with male preponderance, and there are also sex differences in response to physical exercise. Perhaps underlying mechanisms herein can explain the difference observed between males and females in the study,” Dr. Vaage said. He noted that future research should explore this difference.

Study limitations included the absence of data on physical trauma and head trauma, which have been linked with increased ALS risk. In addition, there were no data on genotype.

In an accompanying editorial, Pamela Shaw, MD, and Johnathan Cooper-Knock, BMBCh, PhD, of the University of Sheffield, Sheffield, England, described the research as a “valuable contribution to the field and potentially provides some reassurance that mild/moderate levels of physical activity in middle age do not increase the risk for ALS but may instead have a beneficial protective effect.” 

Future research on exercise in ALS, they add, should consider sex differences, capture the most extreme physical activity levels, and identify any genetic factors that may mediate the association between intense exercise and ALS.

No targeted funding was reported. Dr. Vaage reported receiving funding from ALS Laboratory Group Norway.

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

Moderate exercise in midlife is associated with a reduced risk for amyotrophic lateral sclerosis (ALS) later in life, but this benefit appears to be limited to men, findings from a large prospective study showed.

Men who reported moderate levels of physical activity had a 29% lower risk for ALS, whereas those with high levels of physical activity had a 41% lower risk for the disease.

The findings were published online in Neurology.
 

Conflicting Findings

Several famous athletes have died of ALS, including the baseball player Lou Gehrig (for whom the disease is named), football players Dwight Clark, Steve Gleason, and Kevin Turner, and the boxer Ezzard Charles. This has led some scientists to speculate that intense physical activity may play a role in the development of the disease.

Anders M. Vaage, MD, noted there have been conflicting findings in previous studies on the topic, with results showing both increased and reduced ALS risks with increasing levels of physical activity.

In one study, researchers followed more than 212,000 Swedish cross-country skiers and more than 500,000 Swedish individuals in the general population for 20 years and found that strenuous cross-country skiing was associated with a higher risk for ALS but only among the best skiers; recreational skiers appeared to have a reduced risk.

“Our study does not necessarily contradict previous studies with findings of an increased ALS risk with extreme or intense levels of physical activity in athletes, as this study reflects more moderate levels of physical activity and fitness in the total population,” said Dr. Vaage.

To further explore the association, the researchers followed 373,700 individuals who participated in a cardiovascular health survey for an average of 27 years. When the survey began, most participants were 40-42 years old.

Participants were followed until the date of ALS diagnosis, ALS death, death from other causes, emigration, or the end of study in August 2021.

Participants answered questions about physical activity levels, smoking status, and other issues relating to cardiovascular health, and participants’ resting heart rate was measured and divided into quartiles of 31-65 beats per minute (BPM), 66-74 BPM, 75-81 BPM, or 82-100 BPM.

Participants self-reported their physical activity over the past year, classifying it into one of four categories: Sedentary, at least 4 hours per week of walking or cycling, at least 4 hours per week of recreational sports or heavy gardening, or regular participation in intense training or sports competitions several times per week.

Only a few participants reported the highest level of physical activity, so researchers combined the third and fourth categories into a single high-activity group.

Of the total study cohort, 504 participants developed ALS. Of those who developed the disease, 59% were men.

Researchers found that of the 41,898 male participants with the highest level of physical activity, 63 developed ALS. In comparison, of the 76,769 male participants who reported an intermediate level of physical activity, 131 developed ALS. Among the 29,468 male participants who reported the lowest level of physical activity, 68 developed ALS.
 

No Link in Women?

After adjusting for smoking, body mass index, and other risk factors, investigators found that men with moderate physical activity levels had a 29% lower risk for ALS compared with those with low physical activity levels, whereas those with the highest activity levels had a 41% lower risk.

In addition, men in the lowest of the four categories of resting heart rate had a 32% reduced risk for ALS compared with men with a higher resting heart rate.

Investigators are unclear why there was a lack of association between physical activity and resting heart rate and ALS risk in women.

“There are known sex differences in ALS, which includes a sex ratio with male preponderance, and there are also sex differences in response to physical exercise. Perhaps underlying mechanisms herein can explain the difference observed between males and females in the study,” Dr. Vaage said. He noted that future research should explore this difference.

Study limitations included the absence of data on physical trauma and head trauma, which have been linked with increased ALS risk. In addition, there were no data on genotype.

In an accompanying editorial, Pamela Shaw, MD, and Johnathan Cooper-Knock, BMBCh, PhD, of the University of Sheffield, Sheffield, England, described the research as a “valuable contribution to the field and potentially provides some reassurance that mild/moderate levels of physical activity in middle age do not increase the risk for ALS but may instead have a beneficial protective effect.” 

Future research on exercise in ALS, they add, should consider sex differences, capture the most extreme physical activity levels, and identify any genetic factors that may mediate the association between intense exercise and ALS.

No targeted funding was reported. Dr. Vaage reported receiving funding from ALS Laboratory Group Norway.

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

Nearly 2 years ago, over-the-counter (OTC) hearing aids became available without a prescription. Audiologists and consumers have doubted their effectiveness, but OTC hearing aids can be as good as — and sometimes better — than traditional aids at half the cost.

A new study published in JAMA Otolaryngology–Head & Neck Surgery showed OTC hearing aids to be as or more effective in treating mild to moderate hearing loss.

“This means consumers with mild to moderate hearing loss can now access cost-effective devices without compromising on long-term benefits,” said De Wet Swanepoel, PhD, professor in the Department of Speech-Language Pathology and Audiology at the University of Pretoria in South Africa, and an author of the study.

Approximately 30% of people over the age of 70 who could benefit from hearing aids actually use them. In 2022, the US Food and Drug Administration (FDA) allowed the sale of nonprescription devices. But a year later, just 2% of people with hearing difficulty had purchased OTC hearing aids. Impaired hearing can increase the risk of developing dementia and decrease quality of life.

Dr. Swanepoel and his colleagues enrolled 44 individuals in the comparative effectiveness study, which was an extension of an initial randomized control trial lasting 6 weeks. Participants were tracked over an 8-month period, with about half using self-fitted OTC devices and the remaining with audiologist-fitted models. On the basis of users’ self-reported surveys, the results showed no clinically meaningful difference in effectiveness. The OTC hearing aids showed better satisfaction scores among users.

The typical pair of audiologist-fitted hearing aids costs $2000. OTC hearing aids, including the Lexi Lumen model used in the latest study and available in the United States, cost around $799.

“The cost savings combined with the effective performance of self-fit hearing aids make them a promising option for individuals with mild to moderate hearing loss,” Dr. Swanepoel said.

But many audiologists have reported they do not believe the nonprescription devices would provide the same benefit as a hearing aid provided by specialists, according to one survey in 2023.

OTC hearing aids may change the role of the primary care clinician, who may instead of referring patients to an audiologist, suggest a nonprescription version. They may also field questions from patients on which types are better, which Sharon Horesh Bergquist, MD, an internal medicine physician at Emory University in Atlanta, said she is already doing.

“Primary care physicians already evaluate patients with hearing loss to identify underlying causes and provide referrals to audiologists or ear, nose, and throat specialists; with the availability of OTC hearing aids, they can further support patients by informing them about these accessible options and help them understand when OTC aids may be appropriate,” Dr. Bergquist said.

When selecting a model, Dr. Bergquist recommends patients try them before buying. Certain models permit returns, but she advises patients to check the terms as not all models are the same.

“By removing the requirement to see an audiologist or ear, nose, and throat specialist, OTC hearing aids can increase use among individuals who might otherwise forgo them without eliminating the need for professional care,” Dr. Bergquist said.

She does refer some patients to visit an audiologist first to understand their type and cause of hearing impairment, which can help users select the best OTC model for them.

The study received funding from the hearX Pty Ltd Group and the National Institutes of Health. Various authors reported receiving personal fees from the hearX Group and Care Research Manchester Biomedical Research Centre.
 

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

Nearly 2 years ago, over-the-counter (OTC) hearing aids became available without a prescription. Audiologists and consumers have doubted their effectiveness, but OTC hearing aids can be as good as — and sometimes better — than traditional aids at half the cost.

A new study published in JAMA Otolaryngology–Head & Neck Surgery showed OTC hearing aids to be as or more effective in treating mild to moderate hearing loss.

“This means consumers with mild to moderate hearing loss can now access cost-effective devices without compromising on long-term benefits,” said De Wet Swanepoel, PhD, professor in the Department of Speech-Language Pathology and Audiology at the University of Pretoria in South Africa, and an author of the study.

Approximately 30% of people over the age of 70 who could benefit from hearing aids actually use them. In 2022, the US Food and Drug Administration (FDA) allowed the sale of nonprescription devices. But a year later, just 2% of people with hearing difficulty had purchased OTC hearing aids. Impaired hearing can increase the risk of developing dementia and decrease quality of life.

Dr. Swanepoel and his colleagues enrolled 44 individuals in the comparative effectiveness study, which was an extension of an initial randomized control trial lasting 6 weeks. Participants were tracked over an 8-month period, with about half using self-fitted OTC devices and the remaining with audiologist-fitted models. On the basis of users’ self-reported surveys, the results showed no clinically meaningful difference in effectiveness. The OTC hearing aids showed better satisfaction scores among users.

The typical pair of audiologist-fitted hearing aids costs $2000. OTC hearing aids, including the Lexi Lumen model used in the latest study and available in the United States, cost around $799.

“The cost savings combined with the effective performance of self-fit hearing aids make them a promising option for individuals with mild to moderate hearing loss,” Dr. Swanepoel said.

But many audiologists have reported they do not believe the nonprescription devices would provide the same benefit as a hearing aid provided by specialists, according to one survey in 2023.

OTC hearing aids may change the role of the primary care clinician, who may instead of referring patients to an audiologist, suggest a nonprescription version. They may also field questions from patients on which types are better, which Sharon Horesh Bergquist, MD, an internal medicine physician at Emory University in Atlanta, said she is already doing.

“Primary care physicians already evaluate patients with hearing loss to identify underlying causes and provide referrals to audiologists or ear, nose, and throat specialists; with the availability of OTC hearing aids, they can further support patients by informing them about these accessible options and help them understand when OTC aids may be appropriate,” Dr. Bergquist said.

When selecting a model, Dr. Bergquist recommends patients try them before buying. Certain models permit returns, but she advises patients to check the terms as not all models are the same.

“By removing the requirement to see an audiologist or ear, nose, and throat specialist, OTC hearing aids can increase use among individuals who might otherwise forgo them without eliminating the need for professional care,” Dr. Bergquist said.

She does refer some patients to visit an audiologist first to understand their type and cause of hearing impairment, which can help users select the best OTC model for them.

The study received funding from the hearX Pty Ltd Group and the National Institutes of Health. Various authors reported receiving personal fees from the hearX Group and Care Research Manchester Biomedical Research Centre.
 

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

Nearly 2 years ago, over-the-counter (OTC) hearing aids became available without a prescription. Audiologists and consumers have doubted their effectiveness, but OTC hearing aids can be as good as — and sometimes better — than traditional aids at half the cost.

A new study published in JAMA Otolaryngology–Head & Neck Surgery showed OTC hearing aids to be as or more effective in treating mild to moderate hearing loss.

“This means consumers with mild to moderate hearing loss can now access cost-effective devices without compromising on long-term benefits,” said De Wet Swanepoel, PhD, professor in the Department of Speech-Language Pathology and Audiology at the University of Pretoria in South Africa, and an author of the study.

Approximately 30% of people over the age of 70 who could benefit from hearing aids actually use them. In 2022, the US Food and Drug Administration (FDA) allowed the sale of nonprescription devices. But a year later, just 2% of people with hearing difficulty had purchased OTC hearing aids. Impaired hearing can increase the risk of developing dementia and decrease quality of life.

Dr. Swanepoel and his colleagues enrolled 44 individuals in the comparative effectiveness study, which was an extension of an initial randomized control trial lasting 6 weeks. Participants were tracked over an 8-month period, with about half using self-fitted OTC devices and the remaining with audiologist-fitted models. On the basis of users’ self-reported surveys, the results showed no clinically meaningful difference in effectiveness. The OTC hearing aids showed better satisfaction scores among users.

The typical pair of audiologist-fitted hearing aids costs $2000. OTC hearing aids, including the Lexi Lumen model used in the latest study and available in the United States, cost around $799.

“The cost savings combined with the effective performance of self-fit hearing aids make them a promising option for individuals with mild to moderate hearing loss,” Dr. Swanepoel said.

But many audiologists have reported they do not believe the nonprescription devices would provide the same benefit as a hearing aid provided by specialists, according to one survey in 2023.

OTC hearing aids may change the role of the primary care clinician, who may instead of referring patients to an audiologist, suggest a nonprescription version. They may also field questions from patients on which types are better, which Sharon Horesh Bergquist, MD, an internal medicine physician at Emory University in Atlanta, said she is already doing.

“Primary care physicians already evaluate patients with hearing loss to identify underlying causes and provide referrals to audiologists or ear, nose, and throat specialists; with the availability of OTC hearing aids, they can further support patients by informing them about these accessible options and help them understand when OTC aids may be appropriate,” Dr. Bergquist said.

When selecting a model, Dr. Bergquist recommends patients try them before buying. Certain models permit returns, but she advises patients to check the terms as not all models are the same.

“By removing the requirement to see an audiologist or ear, nose, and throat specialist, OTC hearing aids can increase use among individuals who might otherwise forgo them without eliminating the need for professional care,” Dr. Bergquist said.

She does refer some patients to visit an audiologist first to understand their type and cause of hearing impairment, which can help users select the best OTC model for them.

The study received funding from the hearX Pty Ltd Group and the National Institutes of Health. Various authors reported receiving personal fees from the hearX Group and Care Research Manchester Biomedical Research Centre.
 

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

In March 2024, four women in Tennessee and three in New York City fell ill after receiving botulinum neurotoxin (BoNT) injections in nonmedical settings, and four of the women required hospitalization — two in the intensive care unit. None of the cases required intubation, according to an announcement of an investigation into these reports in by the Centers for Disease Control and Prevention (CDC).

The report, published online in the Morbidity and Mortality Weekly Report, notes that the four patients in Tennessee received counterfeit BoNT, while product information was not available for the three cases in New York City. “However, one person reported paying less than US wholesale acquisition cost for the administered product, and another reported that the product had been purchased overseas,” the authors of the report wrote. The development underscores that BoNT injections “should be administered only by licensed and trained providers using recommended doses of FDA [Food and Drug Admininstration]-approved products.”

This report follows a CDC advisory published in April 2024 of at least 22 people from 11 states who reported serious reactions after receiving botulinum toxin injections from unlicensed or untrained individuals or in nonhealthcare settings, such as homes and spas.

The median age of the women in the July report was 48 years, and signs and symptoms included ptosis, dry mouth, dysphagia, shortness of breath, and weakness. Onset occurred between February 23 and March 7, 2024.

“This investigation did not determine why these illnesses occurred after cosmetic BoNT injections; potential reasons might include use of counterfeit BoNT, which might be more potent or contain harmful additional ingredients or higher susceptibility to BoNT effects among some persons,” the investigators wrote. They recommended further studies to describe the clinical spectrum of cosmetic BoNT injection effects such as severity of signs and symptoms.

For cases of suspected systemic botulism, the CDC recommends calling the local or state health department for consultation and antitoxin release (as well as information on reporting adverse events). Alternatively, the 24/7 phone number for the CDC clinical botulism service is 770-488-7100.

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

In March 2024, four women in Tennessee and three in New York City fell ill after receiving botulinum neurotoxin (BoNT) injections in nonmedical settings, and four of the women required hospitalization — two in the intensive care unit. None of the cases required intubation, according to an announcement of an investigation into these reports in by the Centers for Disease Control and Prevention (CDC).

The report, published online in the Morbidity and Mortality Weekly Report, notes that the four patients in Tennessee received counterfeit BoNT, while product information was not available for the three cases in New York City. “However, one person reported paying less than US wholesale acquisition cost for the administered product, and another reported that the product had been purchased overseas,” the authors of the report wrote. The development underscores that BoNT injections “should be administered only by licensed and trained providers using recommended doses of FDA [Food and Drug Admininstration]-approved products.”

This report follows a CDC advisory published in April 2024 of at least 22 people from 11 states who reported serious reactions after receiving botulinum toxin injections from unlicensed or untrained individuals or in nonhealthcare settings, such as homes and spas.

The median age of the women in the July report was 48 years, and signs and symptoms included ptosis, dry mouth, dysphagia, shortness of breath, and weakness. Onset occurred between February 23 and March 7, 2024.

“This investigation did not determine why these illnesses occurred after cosmetic BoNT injections; potential reasons might include use of counterfeit BoNT, which might be more potent or contain harmful additional ingredients or higher susceptibility to BoNT effects among some persons,” the investigators wrote. They recommended further studies to describe the clinical spectrum of cosmetic BoNT injection effects such as severity of signs and symptoms.

For cases of suspected systemic botulism, the CDC recommends calling the local or state health department for consultation and antitoxin release (as well as information on reporting adverse events). Alternatively, the 24/7 phone number for the CDC clinical botulism service is 770-488-7100.

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

In March 2024, four women in Tennessee and three in New York City fell ill after receiving botulinum neurotoxin (BoNT) injections in nonmedical settings, and four of the women required hospitalization — two in the intensive care unit. None of the cases required intubation, according to an announcement of an investigation into these reports in by the Centers for Disease Control and Prevention (CDC).

The report, published online in the Morbidity and Mortality Weekly Report, notes that the four patients in Tennessee received counterfeit BoNT, while product information was not available for the three cases in New York City. “However, one person reported paying less than US wholesale acquisition cost for the administered product, and another reported that the product had been purchased overseas,” the authors of the report wrote. The development underscores that BoNT injections “should be administered only by licensed and trained providers using recommended doses of FDA [Food and Drug Admininstration]-approved products.”

This report follows a CDC advisory published in April 2024 of at least 22 people from 11 states who reported serious reactions after receiving botulinum toxin injections from unlicensed or untrained individuals or in nonhealthcare settings, such as homes and spas.

The median age of the women in the July report was 48 years, and signs and symptoms included ptosis, dry mouth, dysphagia, shortness of breath, and weakness. Onset occurred between February 23 and March 7, 2024.

“This investigation did not determine why these illnesses occurred after cosmetic BoNT injections; potential reasons might include use of counterfeit BoNT, which might be more potent or contain harmful additional ingredients or higher susceptibility to BoNT effects among some persons,” the investigators wrote. They recommended further studies to describe the clinical spectrum of cosmetic BoNT injection effects such as severity of signs and symptoms.

For cases of suspected systemic botulism, the CDC recommends calling the local or state health department for consultation and antitoxin release (as well as information on reporting adverse events). Alternatively, the 24/7 phone number for the CDC clinical botulism service is 770-488-7100.

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