Tuesday, October 27, 2026

A broad shift away from overtreatment of low-risk prostate cancer

 An analysis of United States data reveals a broad shift away from overtreatment of low-risk prostate cancer. The analysis published by Wiley online in CANCER, a peer-reviewed journal of the American Cancer Society, indicates a shift toward surveillance in response to concerns of overdiagnosis and overtreatment that have hindered screening in the recent past.

During the 2010s, recommendations supporting prostate-specific antigen–based screening for prostate cancer wavered due to growing concerns about the use of unnecessary treatment for slow-growing, localized cancers that posed no threat to patients’ lives. As a result, guidelines supported active surveillance for such low-risk prostate cancer.

To assess the extent to which this shift has translated into reduced treatment among patients, investigators analyzed localized prostate cancer cases across the U.S. in the Surveillance, Epidemiology, and End Results Program (SEER; 2010–2023), the Veterans Affairs health system (VA; 2010–2024), and the Michigan Radiation Oncology Quality Consortium (MROQC; 2021-2025).

The researchers found that since 2010, low-risk prostate cancer has become less common at the time of diagnosis, while patients diagnosed with low-risk cancer increasingly avoid treatment. Specifically, low-risk prostate cancer at diagnosis declined from 28.8% to 24.0% in SEER and from 32.3% to 21.9% in the VA. Among patients diagnosed with low-risk cancer, receipt of neither radiation nor prostate removal increased from 33.6% to 83.4% in 2023 in SEER and from 51.6% to 96.3% in 2024 in the VA. Among 207,196 patients treated with radiation for localized prostate cancer, the proportion with low-risk disease declined from 33.7% to 6.5% in SEER and from 22.9% to 2.0% in the VA. In the more recent MROQC cohort, the proportion remained low, 2.8% to 4.2%, between 2021 and 2025.

“These data reflect broad changes in how prostate cancer is diagnosed and managed in the United States,” said lead author Steven M. Monda, MD, MSCI, of the University of Michigan. “We are seeing a moderate decline in the amount of low-risk prostate cancer being diagnosed, likely reflecting more magnetic resonance imaging use in screening. Moreso however, we are seeing that most of the low-risk prostate cancer is now being appropriately observed and not treated. This is a big win for patients because it means patients are avoiding the harms of unnecessary treatment for cancers that are unlikely to ever affect them.”

 

Full Citation:
“Population-Level Diagnostic and Radiation Treatment Trends of Low-Risk Prostate Cancer.” Steven M. Monda, Varshini Odayar Maggie Yin, Rachel Tucker Gonzalez, Salvador Jaime-Casas, Karolyn M. Hopfensperger, Danielle Kendrick, Melissa A. Mietzel, Mazen Mislmani, Mark Zaki, Patrick W. McLaughlin, Todd M. Morgan, William C. Jackson, Matthew J. Schipper, David K. Heimburger, Alex Bryant, Lori J. Pierce, Tudor Borza, and Robert T. Dess. CANCER; Published Online: October 26, 2026 (DOI: 10.1002/cncr.70603).
URL Upon Publication: http://doi.wiley.com/10.1002/cncr.70603

Why every stage of life matters for a woman’s heart health

 

How do life stages shape women's heart health? A landmark series of American Heart Association publications explores connections among hormonal changes, mental health and well-being and cardiovascular health

Peer-Reviewed Publication

American Heart Association

What to know about women’s heart health:

  • A new approach to women’s heart health looks at risk and opportunity across every stage of their life.
  • Hormonal health, mental health and well-being, heart health and brain health are closely connected.
  • Periods, pregnancy and the time around and during menopause can offer important opportunities to better protect heart health.

Embargoed until 4 a.m. CT / 5 a.m. ET, Monday, October 26, 2026

DALLAS, Oct. 26, 2026 — A new approach to women’s heart health may offer them a lifetime of opportunities. A trio of scientific papers, published today in the journal Circulation, spells out how fluctuating hormones, mental health and well-being, the heart and the brain are linked and how those connections need to be a routine part of care from a young age.

“Women experience their healthcare across clinical specialties, but it often is fragmented or disconnected. Specifically, these reports connect the dots for clinicians, for patients, and across health domains so that care is holistic and begins in adolescence,” Dr. Sadiya Khan, chair of the writing group, said in a news release. Khan is the Magerstadt Professor of Cardiovascular Epidemiology at Northwestern University’s Feinberg School of Medicine in Chicago.

“Heart disease and other forms of cardiovascular disease don’t suddenly become relevant when we become older women,” said Dr. Stacey E. Rosen, immediate past volunteer president of the American Heart Association, who helped write the reports. They view a woman’s life in distinct stages – each of which offers chances for early detection, risk factor identification and treatment, she said.

The publications are a joint effort among the Heart Association, the American Academy of Pediatrics, the American College of Obstetricians and Gynecologists and the Society for Maternal-Fetal Medicine. They represent “a paradigm shift in how we look at women’s cardiovascular and brain health,” Rosen said.

For pediatricians, primary care clinicians, endocrinologists, obstetricians, gynecologists and cardiologists, the documents offer a unified approach to cardiovascular concerns specifically for women, said Dr. Esther S.H. Kim, director of the Center for Women’s Cardiovascular Health at Atrium Health in Charlotte, North Carolina. She also helped write the publications.

Each stage of a woman’s life offers “windows of opportunity” to prevent heart disease, she said.“We can go all the way back to adolescence and even childhood and figure out, ‘This person is at risk; we need to keep a closer eye on them,’” said Kim, who is also a professor and chair of cardiovascular medicine at the Wake Forest University School of Medicine in Charlotte.

For women themselves, it comes down to a simple point, said Dr. Natalie A. Cameron, an internal medicine specialist who is an assistant professor at Northwestern. She led the writing team for one of the documents and contributed to the other two.“We don’t want heart attacks and strokes to happen,” she said. By being proactive, women have opportunities to lower their risks.

Here are some of the key points from the new publications that women may want to discuss with their healthcare team to ensure their hearts are as healthy as possible.

How does heart disease differ in men and women?

The reports emphasize how hormonal health affects cardiovascular health across a woman’s life.

For years, scientists ignored the importance of hormones in women’s heart health, Rosen said, because the monthly fluctuations made research more complicated. But estrogen, estradiol and progesterone “impact cells in blood vessels, in the brain, in heart muscle,” Rosen said. They affect cholesterol levels, the stickiness of blood cells, inflammation, blood pressure and the body’s stress response.

“If you appreciate the understanding that these hormones are not just affecting the uterus, ovaries and fallopian tubes but affecting in a rhythmic way every part of the cardiovascular system and brain, you can appreciate why these fluctuations or issues related to these hormones in women have an enormous impact” on heart and brain health, she said.  

And while the most common cardiovascular issue in women is the same as in men – plaque buildup that narrows arteries – Kim said that women are more likely to have other serious problems. The classic image of heart disease, Kim said, is a “Homer Simpson-type of person – a middle-aged or older man with very obvious cardiovascular risk factors. But you know, Marge Simpson can also have heart disease.”

“And the heart disease that Marge could have may look different than Homer’s; things like microvascular coronary disease, which affects small blood vessels in the heart; or heart failure with preserved ejection fraction, in which the heart contracts normally but fails to relax properly between beats; or spontaneous coronary artery dissection, where a heart artery suddenly tears,” Kim said.  

Doctors need to think about such conditions in women, Kim said, because they require specific diagnostic tests, “and if you don’t think of the disease processes, you won’t order the right tests, and these diseases will be missed.” And women should not be afraid to speak up, Kim said. “Know the symptoms of cardiovascular disease, and if you’re having them, talk about them,” Kim said. “And if your doctor is ignoring you, you should be persistent.”

Why the teen years matter in women’s heart health

“Heart health for women doesn’t start at menopause,” said Dr. Amanda M. Perak, an associate professor of pediatrics and preventive medicine at Northwestern. “Puberty is a big turning point.”

For example, details about menstrual cycles, or periods, offer a look at future heart health, said Perak, who is also a pediatric cardiologist at Ann & Robert H. Lurie Children's Hospital of Chicago who worked on all three publications. She said:

  • A first period before age 10 is linked to a higher risk of heart disease later in life. “That’s not automatically a reason for alarm or medication,” Perak said. “It’s a reason to pay a little closer attention to healthy habits and routine checkups.”
  • Irregular periods, especially along with stubborn, deep acne or unusually extra facial or body hair growth, can be a sign of polyendocrine metabolic ovarian syndrome (previously known as polycystic ovary syndrome, or PCOS), which has been linked to problems regulating blood sugar, diabetes and heart disease later on. “Some irregularity is expected in the first one to three years after a girl’s first period,” Perak said, “so what matters is a pattern that persists.”
  • By knowing their period history, older teens can be ready to talk with their adult doctor or healthcare professional after they leave a pediatrician’s care.

“The goal isn't to worry teens about the chance of a heart attack, which are decades away for nearly all of them,” Perak said. “It’s that the teen years are when patterns get set, and it’s much easier to keep good heart health than to get it back.”

Early adulthood: What women may want to discuss with their doctors

“Women should just be aware that they can be at risk for cardiovascular disease,” Kim said. She has worked with older women who were referred to her for testing that measures plaque buildup in the heart’s arteries and were “shocked out of their minds” to see abnormal scores.

If those women had been aware of cholesterol problems, family history issues or the need for healthy habits at an earlier age, their abnormal scores might have been prevented, she said. “At every phase of life, women can ask their clinicians, ‘How can I optimize my heart health?’” Cameron said. And at every phase, the basics known as Life’s Essential 8 will be part of the answer. 

That means maintaining healthy weight, blood pressure, blood sugar and cholesterol levels; eating a healthy diet; getting enough physical activity and quality sleep; and avoiding tobacco.

Other important questions Cameron suggested include:

  • What is a normal period? Abnormalities at this age can signal higher cardiovascular risk.  
  • How do contraceptive options affect heart health? Some are better for women with heart disease or cardiovascular disease risk factors.  
  • If a woman is planning pregnancy, does she need any specific tests related to her history or medication adjustments?

The reports emphasize the importance of having good cardiovascular health before pregnancy. But 9 out of 10 women ages 20 to 44 have less-than-ideal heart health when they become pregnant.

After pregnancy: Why heart health still matters postpartum  

Pregnancy is often seen as a stress test for the heart. High blood pressure in pregnancy, gestational diabetes, or having a preterm birth, are linked to higher risk of heart disease later in life, Cameron said.

The first year after a pregnancy is also “a very critical time” for controlling and monitoring those risks, she said. But many women face challenges that prevent them from getting follow-up care.

The links between a woman’s mental health and their heart

For women, mental health and wellbeing, hormonal health and heart health are connected in many ways at every life stage.

  • Mood changes, which may include symptoms of anxiety and depression, can be related to hormonal fluctuations. 
  • Anxiety or depression may influence lifestyle choices. “You may exercise less or eat less healthy foods if you’re feeling very depressed,” Cameron said.
  • Starting around age 12, eating disorders, which can affect future cardiovascular health, become more common in girls, Perak said.
  • By age 17, girls are twice as likely as boys to be diagnosed with depression. Teens with depression are more likely to develop obesity later, Perak said, and teens with obesity are more likely to develop depression.
  • Women with established cardiovascular disease are more likely to have depression and anxiety, Rosen said, while depression and anxiety can harm their cardiovascular health. 

The new series of papers call for making mental health and wellbeing screening a routine part of a woman’s care. 

What happens to heart health before and after menopause?

Hormones fluctuate in the years before menopause, Cameron said. “In general, as those changes are happening, women may experience increases in their low-density lipoprotein (“bad cholesterol” levels, weight gain and potentially rising blood pressure.”

It’s also a time when years of unhealthy lifestyle choices may start to catch up, and overt heart disease may emerge. Does that mean it’s a time to throw in the towel and surrender to something inevitable? “The answer is an absolute, positive, emphatic no,” Rosen said. It's never too late to make healthy changes. 

But the years around menopause are a good time for a woman and her healthcare team to discuss questions such as:  

  • Am I at risk for heart disease?
  • What can I do about it? 
  • What tests should I have?

“It's really important to know your numbers and monitor those numbers with a clinician at your annual visits, or more often” if you're actively managing blood pressure or cholesterol levels, Cameron said.

What should women know about menopause and heart health?

Menopause marks the end of a woman’s periods. But if she lives an average life span, 40% of her life is still ahead of her.

Key things for a woman may want to discuss with her healthcare team, Rosen said, include:

  • How do I predict my risk? A doctor may use a risk calculator, such as the American Heart Association’s PREVENT equations, to guide care.
  • What can I do to address those essential risk factors?  
  • Sleep, for example, is often a concern during menopause, Rosen said. Anyone having problems may want to ask, “Is this something to be concerned about and how should I be evaluated? What are treatment options?”
  • What else can I do to make sure the next 40 years are as healthy as possible?

It’s never too late to do something, Rosen emphasized, noting that her mother, 87, was just put on cholesterol-lowering medications – a decision she heartily endorsed. “It’s always about opportunities,” she said.

How coordinated care can support women’s heart health

Women’s healthcare is fragmented, Cameron said. Over the course of her life, she may see a pediatrician, primary care doctor, obstetrician/gynecologist, cardiologist and psychologist. Communication is not a given, and health records do not always transfer.

The new publications spell out the need for unified care, but women can find ways to own and organize their own health journey as well, Rosen said.

“I joke with new patients, ‘You would never go to your accountant before tax season without your paperwork,’” expecting them to know your salary and what taxes you’ve paid in the past. So whether it’s in a notepad or a digital folder, Rosen encourages tracking that medical history as a way of taking an active role in care.

Cameron suggested asking anyone who sees multiple doctors  if their clinicians can see each other’s medical notes and whether they’ve talked. Some of her patients have provided phone numbers to help her connect with clinicians outside of her healthcare system.

Some women are better taking such steps on behalf of others, Rosen said. A woman caring for a sick parent or child can be “a lioness” about preventive care. “Remind yourself that you’re worthy of doing that work for yourself.”

Cardiovascular disease, which includes heart disease and stroke, is the leading cause of death in women, claiming more than 400,000 in the U.S. each year. That’s more than breast cancer, lung cancer and chronic lung disease combined. Yet only about 4 in 10 women recognize it as their greatest health threat. The American Heart Association, through its Go Red for Women initiative, aims to empower women to take charge of their heart health. Resources are available to help protect and strengthen your heart at every stage of life.

Additional Resources:

Sunday, October 25, 2026

New sunscreen type

 For the first time in more than a quarter-century, Americans have a new option when shopping for sunscreen: a skin-protecting chemical that’s long been a go-to option in Europe and other parts of the world.

The U.S. Food and Drug Administration approved bemotrizinol — sometimes called BEMT — in June. The first sunscreens containing it are now hitting U.S. store shelves, including formulas from Neutrogena and other manufacturers.

Dermatologists say the chemical fills an important market gap by offering broad protection, like the most well-established sunscreen ingredients, but without their cosmetic downsides, including white streaking.

BEMT has decades of safety data behind it, including studies showing it has minimal absorption into the skin. That’s been a concern with some older sun-blocking chemicals.

“It’s not a brand-new ingredient that you’re going to be the first person to try,” said Dr. Jennifer Stein, a dermatologist at NYU Langone Health.

Here’s what to know:

New ingredient offers broad protection without streaks

To be effective, sunscreens must protect against both forms of ultraviolet light that can damage the skin — UVB rays, which cause most sunburn, and UVA rays that pose the greatest risk of skin cancer and wrinkles.

Sunscreens that block both forms are labeled “broad spectrum protection.” Those that don’t must carry an FDA warning label.

BEMT is the first chemical-based sunscreen in the U.S. that offers this dual protection. Previously, manufacturers had to mix multiple ingredients to protect against both UVA and UVB light.

“This ingredient provides a solution for what is currently a big gap with respect to providing strong UVA protection,” said David Andrews, chief science officer of the Environmental Working Group, a nonprofit that advocates for higher sunscreen standards.

A different class of sunscreens, using minerals such as zinc oxide and titanium dioxide, has long been shown to offer strong protection against both forms of ultraviolet light. These mineral-based formulas work by physically blocking harmful rays from the skin.

But some people — particularly those with darker complexions — tend to avoid them because they cause white streaking and discoloration. In other cases, people don’t like their texture or consistency.

“Those are good sunscreens,” Stein said. “But for people who aren’t so inclined to use them — maybe they don’t like how it feels on their skin — this is a nice option.”


There’s less skin penetration with the new formula

The fact that chemical-based sunscreens are absorbed into the skin means they have to be carefully studied to make sure they aren’t building up in the body at unsafe levels.

Last month, the FDA revoked approval of an older chemical ingredient, oxybenzone, after determining it was “absorbed through the skin to a greater extent than previously understood.”

That’s not a problem with BEMT.

“It’s a molecule that’s too big to really penetrate through the skin and get absorbed into the bloodstream,” Stein said. “The older chemical sunscreens had small molecules.”

As part of its safety review, the FDA reviewed studies of BEMT in more than 500 patients conducted by Dutch manufacturer DSM Nutritional Products. Levels of the chemical absorbed into the skin were nearly undetectable, the studies found.

Agency reviewers said research in people who used the sunscreen daily for up to three weeks showed that BEMT “did not cause irritation” or allergic reactions. As a result, the FDA designated the ingredient as “generally recognized as safe and effective,” alongside the older mineral ingredients zinc oxide and titanium dioxide.

Sunscreen Glossary

UVA/UVB: The types of ultraviolet light that can damage the skin. UVB rays cause most sunburn, and UVA rays pose the greatest risk of skin cancer and wrinkles.

Broad spectrum: Sunscreen that protects against both types of harmful ultraviolet light.

Mineral sunscreen: Made from zinc oxide or titanium oxide. These are also known as physical sunscreens because they sit on your skin’s surface and block and reflect ultraviolet light.

Chemical sunscreen: Made from chemicals such as avobenzone, oxybenzone and octinoxate. These chemicals must be absorbed into the skin to work. Bemotrizinol, or BEMT, is now available in the U.S. It is a chemical sunscreen but it acts more like a mineral one — it sits on the top of the skin and blocks UV rays. 

Excessive weight gain during pregnancy = higher risk of severe maternal complications

 

A new study of more than one million births led by McMaster University researchers has found that gaining too much weight during pregnancy, regardless of a person’s starting weight, is linked to a higher risk of life-threatening maternal complications.

Current pregnancy weight-gain recommendations were developed primarily to improve outcomes for babies, such as healthy birth weight and reducing the risk of preterm birth. The study, published in JAMA Network Open on Oct. 22, 2026, suggests the recommendations should also be evaluated through the lens of maternal health, including the risk of life-threatening complications such as bleeding, pre-eclampsia and ICU admission during childbirth.

"We've long known that a person's weight before pregnancy is a risk factor. We wanted to know whether the amount of weight gained during pregnancy also influences the risk of complications,” says lead author Sahar Khademioore, a Health Research Methodology PhD candidate at McMaster. "Because weight gain is something that can potentially be addressed, understanding how it relates to severe complications gives us an opportunity to better support maternal health.”

Of the more than one million Ontario pregnancies studied using the BORN Ontario birth registry:

  • 53 per cent gained more weight than recommended.
  • 19 per cent gained less than recommended.
  • More than 15,000 severe maternal morbidity cases were identified.
  • Excessive weight gain increased risk across every body mass index (BMI) category.

People with pre-existing conditions such as diabetes, asthma and high blood pressure faced roughly double the risk of severe maternal complications, with risks increasing further when weight gain fell outside recommended ranges. Researchers also found that gaining less than the recommended amount of weight was associated with higher risks of severe maternal outcomes in some BMI groups.

“More than half of pregnancies in our study involved weight gain above current recommendations, underscoring how challenging healthy weight gain during pregnancy can be. Our findings provide important evidence for clinicians and policymakers, but supporting healthy weight gain will require more than individual counselling. We also need broader, population-level strategies that create supportive environments for healthy pregnancies,” says senior author Laura Anderson, associate professor with McMaster’s Department of Health Research Methods, Evidence, and Impact.

The study is part of the SERENE Project, a research effort in partnership with a lived experience advisory network that is committed to exploring why and when severe maternal morbidity happens, which people are most affected, what are the long-term physical, social and mental health implications, and how severe maternal morbidity and its negative effects can be reduced. 


Saturday, October 24, 2026

Eating meat, fish, eggs, and dairy products was associated with weight gain

 Eating more meat, fish, eggs, and dairy products was associated with weight gain even when those foods were minimally processed, according to a new study from the Physicians Committee for Responsible Medicine published in Nutrition Research. Minimally processed plant foods, such as fruits, vegetables, whole grains, and beans, showed the opposite pattern.

“Ultra-processed foods get most of the blame for weight gain, but our results suggest we also need to ask whether a food comes from a plant or an animal,” says lead author Hana Kahleova, MD, PhD, director of clinical research at the Physicians Committee. “A chicken breast is minimally processed. So is an apple. In our study, they did not move the scale in the same direction.”

The researchers analyzed data from a randomized crossover trial in which 62 adults with overweight followed a Mediterranean diet, rich in olive oil, fish, and nuts, and a low-fat vegan diet for 16 weeks each, separated by a four-week washout. Participants kept three-day diet records, and every food was classified by degree of processing, using the NOVA system, and by whether it came from a plant or an animal.

Compared with the Mediterranean diet, the vegan diet cut minimally processed animal foods by 135 grams per day more and raised minimally processed plant foods by 202 grams per day more. Processed animal and plant foods also fell more on the vegan diet. Across both diets, eating more minimally processed animal foods was linked to weight gain; this was the strongest association in the analysis and the only one to remain statistically significant after correction for multiple comparisons. Processed and ultra-processed animal foods tended to track with weight gain, and minimally processed plant foods with weight loss, although these associations were weaker. Ultra-processed plant foods were not associated with weight change.

In the main trial, published in 2022, participants lost an average of 6 kilograms (about 13 pounds) on the vegan diet, with no change on the Mediterranean diet. Minimally processed plant foods are high in fiber and water and low in calorie density, which helps people feel full on fewer calories.

“If you want to lose weight, fill your plate with beans, vegetables, fruits, and whole grains, and leave the animal products off,” says Dr. Kahleova. “The degree of processing still matters, but it is not the whole story.”

Thursday, October 22, 2026

Prenatal supplement linked to improved child cognition and social behavior

A nutritional supplement taken during pregnancy may support fetal brain development and improve children’s cognitive performance and social behavior, according to new research from the University of Colorado Anschutz.

The randomized clinical trial, published this week in the American Journal of Obstetrics & Gynecology, found that children whose mothers took phosphatidylcholine, a form of choline found naturally in foods, had fewer social withdrawal problems and scored higher on cognitive tests than children whose mothers received a placebo.

“This is the largest randomized clinical trial of prenatal choline supplementation ever conducted,” said the study’s senior author Robert Freedman, MD, professor of psychiatry at CU Anschutz. “What this study showed that we have not observed before was an increase in the overall IQ of about eight points when measured at age 4. That put significantly more children into the higher IQ percentile on the test we used.”

The study, Freedman said, showed that children of mothers who received phosphatidylcholine supplements had fewer problems with language development and social skills, compared to women who had received placebos. All women in the study were encouraged to take standard prenatal vitamins and eat a diet that contained eggs, meat and other natural sources of phosphatidylcholine.

“This study provides additional evidence that choline supplements during pregnancy can have lasting effects on children’s brain development,” said Freedman.

Choline is an essential nutrient that helps support brain development. The researchers investigated whether increasing maternal intake during pregnancy could improve children’s early development, building on previous research suggesting that choline plays a critical role in the formation of connections between brain cells.

Researchers enrolled 206 pregnant women, randomly assigning them at 16 weeks of pregnancy to receive either 9,000 milligrams of phosphatidylcholine daily or a placebo until delivery. Researchers assessed children’s behavior from 18 months to 4 years of age and measured cognitive performance at ages 3 and 4.

Among children whose parents completed behavioral assessments, 4% in the supplement group had elevated social withdrawal problems, compared with 24% in the placebo group. These behaviors can include limited interest in other people, withdrawing from social activities and reduced eye contact.

Children in the supplement group also scored an average of nearly eight points higher on standardized cognitive tests than children in the placebo group. The assessments measured overall intellectual performance, including working memory and visual-spatial skills.

Researchers also observed significantly fewer children with behavioral profiles and language difficulties commonly associated with autism spectrum disorder in the supplement group.

The supplement did not significantly reduce attention problems, another primary outcome of the study.

Freedman said choline works because it activates a receptor made by the CHRNA 7 gene in developing nerve cells that helps them develop the machinery to receive signals from other nerve cells before birth.

“Choline in the baby’s circulation comes from the choline eaten by the mother which activates this receptor,” he said. “But many mothers don’t get enough choline in their diets to fully give the baby all that it needs to complete the activation of its neurons. Unfortunately, once the opportunity to do so before birth passes there is no way to go back and correct the problem in brain development.”

Freedman said it was nearly impossible to get enough choline in a normal diet to fully activate the CHRNA7 receptor – eating 10 eggs a day for example – so supplements are necessary.

“We think the dose we recommended in this trial was a bit higher than needed so we are recommending 7200 mg of phosphatidylcholine or 900 mg of choline itself,” he said. “Both are available in drug and grocery stores.”

The researchers reported no significant supplement-related safety problems among mothers or children. But they cautioned that the findings require careful interpretation: about one-third of participants did not complete the study through the four-year assessments, and parents reported their children’s behavioral symptoms.

The findings add to evidence that choline is important for fetal brain development and could help inform future research into prenatal nutrition. The researchers said larger studies with longer follow-up are needed to determine whether the observed differences persist as children grow.


Diverse and sustained social activities may boost cognition in older age

 


3+ activities, volunteering and sports club membership seem particularly effective

Reports and Proceedings

BMJ Group

Diverse and sustained social activities may boost cognitive performance and slow the decline in brain health associated with ageing, suggest the findings of a large international study, published online in the Journal of Epidemiology & Community Health.

 

Regularly engaging in 3 or more of these activities, and including volunteering and sports club membership among them, seem to be particularly effective at helping to keep minds sharp, the findings indicate.

 

The global prevalence of dementia, which is preceded by cognitive impairment, is estimated to affect nearly 153 million people by 2050, point out the researchers. While several studies have looked at the association between social activities and both cognitive function and dementia, the findings have been inconsistent, they add.

 

This might be down to small sample sizes, limited geographic diversity, and differences in the definitions and measurements used for social activity and cognitive outcomes, they suggest.

 

In a bid to overcome some of these issues, the researchers drew on pooled long term data from 5 nationally representative surveys spanning 24 countries.

 

These surveys were: the US Health and Retirement Study (HRS, waves 10-15, 2010-21); the English Longitudinal Study of Ageing (ELSA, waves 4-9, 2008-19); the China Health and Retirement Longitudinal Study (CHARLS, waves 1-4, 2011-18); the Mexican Health and Ageing Study (MHAS, waves 3-5, 2012-18); and the Survey of Health, Ageing, and Retirement in Europe (SHARE, waves 4-8, 2011-20).

 

Participants in each wave were asked about the type and number of social activities they engaged in, and their cognitive performance was assessed at each wave using tests of memory and executive function.

 

The test results produced a z score of global cognitive function, with higher z scores indicative of better cognitive performance.

 

In all, 57,793 participants were included in the study. Their average age ranged from 57 to 73, and they were tracked for an average of 6 years.

 

Analysis of the pooled cognitive z-scores showed that those who engaged in social activities had significantly higher scores than those who didn’t, with scores rising in tandem with the number of social activities.

 

Engaging in at least 3 of these seemed to afford the greatest level of protection against impairments in memory and executive function: those who did this had higher yearly  cognitive z-scores during the tracking period than those who engaged in none.

 

Volunteering and sports club membership were associated with a lower risk of cognitive decline across all 5 groups, while attending training courses and taking care of children were significantly associated with higher cognitive z-scores year on year.

 

But active involvement in political, community, church, and religious groups wasn’t consistently associated with cognitive enhancement.

 

Further analysis indicated that the positive associations between social activities and cognitive function were stronger among women, those aged 60+, those with higher levels of education, those who weren’t depressed, those who lived alone, those of normal weight, those living in rural areas, and those who smoked and/or drank alcohol.

 

This is an observational study, so can’t establish cause and effect. And the researchers acknowledge various limitations to their findings. These include the lack of standardisation across the 5 surveys, only partial adjustment for potentially influential factors, and the focus on the quantity of social activities, to the exclusion of quality, motivation, and experience, all of which may be equally important, they suggest.

 

It’s not entirely clear how social activities might protect against cognitive decline, but there are several plausible explanations, say the researchers.

 

These include the ‘use it or lose it’ hypothesis, which proposes that sustained engagement in cognitively stimulating activities may enhance neural plasticity and strengthen synaptic connections.

 

 A higher level of education is also thought to enhance neural efficiency and compensatory capacity, increasing resilience to the neuropathological changes associated with ageing, while participation in meaningful social activities may promote psychological wellbeing. This in turn may modulate neuroendocrine function and lessen the detrimental effects of chronic stress on hippocampal structure and function, say the researchers.

 

“Collectively, these findings suggest that social activities may operate as a multidimensional protective factor against cognitive deterioration in older adults,” they write.

 

“These results underscore the importance of developing and implementing targeted interventions aimed at promoting diverse and sustained social engagement among older adults as a viable strategy to mitigate the risk of age-related cognitive decline,” they conclude.