Connect with us

Health

Alzheimer’s risk may be 35% lower with common menopause treatment, study finds

Published

on

Alzheimer’s risk may be 35% lower with common menopause treatment, study finds

NEWYou can now listen to Fox News articles!

Women who used estrogen-only menopausal hormone therapy (MHT) were less likely to develop Alzheimer’s-related brain changes or dementia, according to a large Stanford study published Aug. 12 in Neurology.

The researchers analyzed post-mortem data from 21,462 participants, comparing 258 women who reported estrogen-only MHT use with approximately 2,701 women who reported no MHT use.

The researchers examined the brains for signs of Alzheimer’s disease, including amyloid plaques, neurofibrillary tangles and amyloid-plaque density. Plaques and tangles are two hallmark brain changes associated with the common dementia.

Advertisement

ALZHEIMER’S BLOOD TESTS MAY PREDICT SYMPTOMS YEARS IN ADVANCE, BUT EXPERTS URGE CAUTION

The women who took estrogen-only therapy — most of whom had likely undergone hysterectomies — were found to have a 35% lower chance of Alzheimer’s pathology and 39% lower odds of dementia over a lifetime.

Women who used estrogen-only menopausal hormone therapy (MHT) were less likely to develop Alzheimer’s-related brain changes or dementia. (iStock)

Among some living participants, estrogen-only users also performed better on memory testing and were better able to function independently, the study found. Biomarkers in blood and cerebrospinal fluid supported these results.

The participants averaged 70 years of age.

Advertisement

Recent research indicates that menopausal hormone therapy may offer greater benefits when started during or shortly after menopause, the researchers noted.

HOW EATING HABITS COULD INFLUENCE PARKINSON’S DISEASE RISK, ACCORDING TO EXPERTS

Because the women in the study were generally older when they began treatment, the results may actually understate the potential benefits of earlier therapy.

These findings appear to contradict prior studies that linked menopausal hormone therapy to increased dementia risk.

Alzheimer’s disease is the leading cause of dementia among older adults, with women comprising about two-thirds of diagnoses. (iStock)

Advertisement

“Estrogen has well-described neuroprotective effects in animal models,” co-author Jennifer Bruno, PhD, an instructor in psychiatry and behavioral sciences, told Fox News Digital.

“Estrogen plays a role in shifting amyloid toward the non-amyloidogenic pathway and promoting tau dephosphorylation — both amyloid and tau are hallmarks of Alzheimer’s disease.”

DAILY EATING HABIT LINKED TO BETTER BRAIN HEALTH IN OLDER ADULTS, NEW RESEARCH SUGGESTS

“Additionally, estrogen supports synaptic plasticity, reduces neuroinflammation and supports blood brain barrier integrity. So, finding less AD pathology in estrogen-only users was consistent with this mechanism.”

Memory can be impacted by many different conditions, which means clinical diagnoses can sometimes be unreliable, the researchers noted.

Advertisement

Recent research indicates that menopausal hormone therapy may offer greater benefits when started during or shortly after menopause. (iStock)

“Although there’s been great progress with bloodborne and cerebrospinal fluid biomarkers, they don’t tell you the amount and precise location of the brain damage,” said senior author Hadi Hosseini, Ph.D., an associate professor of psychiatry and behavioral sciences at Stanford.

“By looking where the actual damage is done — the brain — you can see where the Alzheimer’s-associated defining features are and how many of them are there.”

CLICK HERE FOR MORE HEALTH STORIES

The study did have some limitations, according to the researchers. As it was observational, it could only show an association but could prove that the hormone therapy reduced Alzheimer’s risk.

Advertisement

“It’s possible that women who used hormone therapy differed from non-users in ways we couldn’t fully measure, such as baseline health status or engagement with healthcare,” Hosseini told Fox News Digital. “We worked hard to adjust for known confounders and to account for who does and doesn’t come to autopsy, but observational data can only take you so far.”

CLICK HERE TO SIGN UP FOR OUR HEALTH NEWSLETTER

Alzheimer’s disease is the leading cause of dementia among older adults, with women comprising about two-thirds of diagnoses.

“By looking where the actual damage is done — the brain — you can see where the Alzheimer’s-associated defining features are and how many of them are there.”

While the study findings don’t change current clinical recommendations, Hosseini said they highlight the need for well-designed clinical trials to confirm these observations and to determine whether menopausal hormone therapy has a protective cognitive effect.

Advertisement

TEST YOURSELF WITH OUR LATEST LIFESTYLE QUIZ

“These results add meaningful, first-of-their-kind pathological evidence to a genuinely controversial area — but they are a signal for further study, not a reason to start or stop MHT for brain health,” Bruno added.

“We need prospective, biomarker-based trials that follow women before, during and after menopause to understand the effects of MHT on brain health.”

CLICK HERE TO DOWNLOAD THE FOX NEWS APP

The study was funded by the National Institutes of Health.

Advertisement

Health

Common cholesterol drug linked to lower dementia risk when started early

Published

on

Common cholesterol drug linked to lower dementia risk when started early

NEWYou can now listen to Fox News articles!

Starting statin therapy shortly after a type 2 diabetes diagnosis may not only protect the heart — it may also be linked to a lower dementia risk.

A large study presented at the European Society of Cardiology Congress in Munich on Aug. 30 found that adults who began taking a statin within one year of their type 2 diabetes diagnosis had a 15% lower relative risk of developing dementia over 10 years compared to those who did not take the medication within five years.

Even for those who delayed starting a statin for one to five years, there was still a 10% lower relative risk, according to the findings, which were published in The Lancet Regional Health – Europe.

Advertisement

3 THINGS TO AVOID IN MIDDLE AGE COULD MEAN 13 MORE YEARS WITHOUT DEMENTIA, STUDY FINDS

A statin is a prescription medication that lowers “bad” LDL cholesterol and helps reduce the risk of heart attack and stroke.

Researchers conducted the study by tracking health data from 132,585 patients in Denmark who were diagnosed with type 2 diabetes between 2006 and 2019 and had no prior history of statin use or dementia.

A statin is a prescription medication that lowers “bad” LDL cholesterol and helps reduce the risk of heart attack and stroke. (iStock)

During a median follow-up of 7.1 years, the team analyzed how the timing of statin treatment impacted overall dementia rates.

Advertisement

Dr. Liron Sinvani, a geriatrician and director for research and innovation at the Northwell Institute for Healthy Aging in New York, said this was a “well-designed, large-scale observational study that adds to a growing body of evidence suggesting that statins may help protect brain health.”

GAME-CHANGING CHOLESTEROL PILL WINS FDA APPROVAL AFTER CUTTING LDL NEARLY 60%

She noted that while a 15% reduction is a modest improvement, it remains “very significant.”

People with type 2 diabetes have an increased risk of cognitive decline and heart disease, consistent with previous research.

Starting a statin within one year of a type 2 diabetes diagnosis was associated with a 15% lower relative risk of developing dementia over 10 years, while delaying treatment reduced the benefit to 10%. (iStock)

Advertisement

Although guidelines generally recommend statins for many adults ages 40 to 75 with diabetes, statin treatment is not always started soon after a type 2 diabetes diagnosis.

The study also examined whether the timing of treatment was linked to dementia risk. People who started statins within a year of their diagnosis had a lower risk than those who did not begin treatment.

CLICK HERE FOR MORE HEALTH STORIES

“The message here is that maybe waiting is actually not the right approach,” Sinvani said, supporting earlier consideration of statin therapy in routine diabetes care.

The expert said she found the results “especially compelling” because the benefit was driven by a lower risk of vascular dementia rather than Alzheimer’s disease.

Advertisement

“The message here is that maybe waiting is actually not the right approach.”

“And that makes biological sense, because we know statins lower cholesterol, reduces inflammation and protects blood vessels,” she added, pointing out that these same mechanisms prevent vascular damage to the brain.

CLICK HERE TO SIGN UP FOR OUR HEALTH NEWSLETTER

Statin therapy should be viewed as one piece of a broader health strategy alongside exercising regularly, adhering to a healthy diet and staying socially connected, according to the expert.

Because this was an observational study rather than a randomized controlled trial, the findings show a strong association but do not prove a direct causal link. (iStock)

Advertisement

Almost half of dementia cases may be preventable or delayable by addressing modifiable risk factors, according to the Lancet Commission.

TEST YOURSELF WITH OUR LATEST LIFESTYLE QUIZ

The study did have limitations. Because it was observational rather than a randomized clinical trial, the researchers could not definitively state that statins directly prevent dementia.

As Sinvani cautioned, “This is not proof that statins prevent dementia, but I think it’s an important step in this literature.”

CLICK HERE TO DOWNLOAD THE FOX NEWS APP

Advertisement

The doctor encouraged people with type 2 diabetes who are not taking a statin to ask their doctor whether the medication is appropriate for them.”

Advertisement
Continue Reading

Health

Marijuana users may face hidden driving danger that standard tests can miss

Published

on

Marijuana users may face hidden driving danger that standard tests can miss

NEWYou can now listen to Fox News articles!

A new study warns that driving after eating cannabis edibles can significantly impair road performance and reaction times, even if blood tests show THC levels far below the legal limit.

The findings, published in JAMA Network Open, highlight a potential challenge for impaired-driving enforcement in Canada and some U.S. jurisdictions.

Most previous cannabis-driving studies have involved smoked or inhaled marijuana, which more rapidly spikes levels of THC (tetrahydrocannabinol, the main psychoactive compound in cannabis) in the bloodstream.

Advertisement

AMERICA HITS MAJOR MARIJUANA MILESTONE AS DAILY WEED USE SURPASSES DAILY DRINKING

Edibles are absorbed more slowly and can produce driving impairment even when blood THC concentrations remain relatively low.

Researchers found that drivers who consumed higher doses of edible THC struggled with lane control, had slower reaction times and experienced greater speed fluctuations. Yet, their blood tests stayed below the standard legal cutoff used to prove impairment at roadside traffic stops.

Researchers measured how well drivers stayed in their lane, how quickly they reacted to road events and how consistently they maintained their speed. (iStock)

To assess how oral cannabis impacts driving, researchers at the Centre for Addiction and Mental Health in Toronto conducted a trial with 40 healthy adult volunteers who regularly use cannabis.

Advertisement

Each participant attended four separate sessions in which they consumed soft-chew gummies containing either 0, 2, 10 or 20 milligrams of THC.

CANNABIS COMPOUNDS COULD REVERSE DISEASE AFFECTING ONE-THIRD OF ADULTS

The researchers then tested the drivers using a driving simulator at two, five and 24 hours after consumption, tracking how well drivers stayed in their lane, how quickly they reacted to road events and how consistently they maintained their speed.

Blood samples and self-reported ratings of intoxication were also collected.

Participants recognized their own limitations, reporting a lower willingness to drive and reduced confidence in their driving skills after taking the gummies. (iStock)

Advertisement

The results showed driving impairment at two and five hours after consuming 10- and 20-milligram gummies. Compared with placebo, participants who consumed those doses had greater variability in lane position, while the 20-milligram dose was also linked to slower reaction times and less consistent speed control.

Participants also recognized their own limitations, reporting a lower willingness to drive and reduced confidence in their driving skills after taking the gummies.

CLICK HERE TO DOWNLOAD THE FOX NEWS APP

The highest blood THC concentrations averaged 1.6 nanograms per milliliter after the 10-milligram dose and 3.4 nanograms per milliliter after the 20-milligram dose. Those levels were below the commonly used 5-ng/mL threshold, although THC limits vary by jurisdiction and some individual samples exceeded 5 ng/mL.

CLICK HERE TO SIGN UP FOR OUR HEALTH NEWSLETTER

Advertisement

By comparison, participants in the team’s previous smoked-cannabis study showed similar levels of impairment while reaching an average peak blood THC concentration of 30.3 nanograms per milliliter, nearly 10 times higher than the 20-milligram edible group.

The study did have some limitations. Tests were conducted on virtual simulators rather than actual roads, meaning drivers faced no real physical risk during the experiments. It also focused on regular cannabis users, so it is unclear how occasional users might react to similar doses.

When the research team previously tested smoked marijuana, drivers with similar impairment levels registered blood THC concentrations averaging 30.3 nanograms per milliliter, nearly 10 times higher. (iStock)

Additionally, minimal residual effects were detected after 24 hours. While maximum speed remained slightly higher among participants on the 10-milligram and 20-milligram doses, subjective feelings of intoxication had completely faded.

TEST YOURSELF WITH OUR LATEST LIFESTYLE QUIZ

Advertisement

In an accompanying commentary, Dr. José Ignacio Nazif-Munoz of the Université de Sherbrooke noted that these biological differences pose a challenge for law enforcement.

CLICK HERE FOR MORE HEALTH STORIES

Because edibles are absorbed slowly through the digestive system, standard blood tests may fail to identify unsafe drivers, leaving policymakers searching for more reliable roadside tools.

“The delayed absorption and prolonged duration of effects of edible cannabis distinguish it from smoked or inhaled cannabis, complicating the interpretation of biological measures,” he wrote.

Advertisement

Continue Reading

Health

Walking for Weight Loss? These Surprising Tips Boost Fat Burn Fast

Published

on

Walking for Weight Loss? These Surprising Tips Boost Fat Burn Fast


Advertisement





How Walking for Weight Loss Helps Burn More Fat After 50



















Advertisement



Advertisement




Use left and right arrow keys to navigate between menu items.


Use escape to exit the menu.

Advertisement

Advertisement
Continue Reading
Advertisement

Trending