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February 4, 2023

Higher lifetime estrogen levels tied to 13{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} lower risk

silhouette of woman projected on skyline and sea horizon — Higher levels of lifetime estrogen are linked to a lower risk of stroke, new research finds. Image credit: Chen Liu/EyeEm/Getty Images.

Researchers investigated the effects of lifetime estrogen exposure on stroke risk.
They found that higher levels of lifetime estrogen exposure in women were associated with a lower risk of stroke.
Further research is needed to understand how higher estrogen exposure confers protection from stroke.

A stroke occurs when blood is blocked from reaching the brain or a blood vessel in the brain bursts.

Stroke is the second-leading cause of death around the world, and its incidence increased substantially between 1990 and 2019 globally, including a 70{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} increase in the number of incident, or first-ever, strokes.

Some studies suggest that higher estrogen levels may protect against stroke. Research shows, for example, that young women have a lower stroke risk than men, and that this risk increases after menopause, when estrogen production reduces.

Understanding more about stroke risk factors could improve preventative care and lead to improved treatment options.

Recently, researchers examined the link between lifetime cumulative estrogen exposure and stroke risk among postmenopausal women in China.

They found that women with the highest lifetime estrogen exposure had the lowest stroke risk.

The study appeared in Neurology.

For the study, researchers examined healthcare data from 122,939 postmenopausal women without prior stroke at baseline from the China Kadoorie Biobank study. Participants were aged between 40 and 79 years and were followed for an average of 8.9 years.

They were asked to provide information about their reproductive history, including the age of puberty onset, the age at which menopause started, and the number of pregnancies they had. They also provided information on their use of contraceptive pills.

The women were then split into four groups according to their reproductive lifespan (RL), or the number of years between puberty onset and menopause. Those in the shortest RL group had up to 31 reproductive years, whereas those in the longest RL group had 36 years or more.

The researchers also collected data on stroke incidence. During the study, they recorded 15,139 cases of new-onset stroke.

The researchers found that 13.2{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of women in the longest RL group had a stroke, compared to 12.6{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of women in the shortest RL group.

However, after adjusting for factors including smoking, age, and physical activity, they found that, in fact, participants in the longest RL group had a 5{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} lower risk for all types of stroke than those in the shortest group.

In particular, when they looked at different stroke subtypes, they found that those in the longest RL group had a 13{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} lower risk for intracerebral hemorrhage compared to those in the shortest RL group. Intracerebral hemorrhage is the most fatal kind of stroke which occurs when blood vessels burst in the brain.

Women in the longest RL group also had a 5{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} lower risk for ischemic stroke — when the blood supply to the brain is interrupted or reduced — compared to the shortest group.

The researchers also found that oral contraceptive pill use duration, which is linked to increased estrogen levels, was associated with a lower risk of stroke.

Those with fewer stillbirths, miscarriages, and terminations were also less likely to develop stroke.

“The link between reproductive lifespan, endogenous/ exogenous estrogens and risk of stroke in women is poorly understood,” Dr. Bharti Manwani, assistant professor of vascular neurology with McGovern Medical School at UTHealth Houston, not involved in the study, told Medical News Today.

“Preclinical studies have shown estrogen to be a profound neuroprotective agent, while clinical trials of estrogen replacement therapy in postmenopausal women failed to show benefit,” she noted.

Dr. Alex Polyakov, associate professor and gynecologist at the University of Melbourne in Australia, also not involved in the study, agreed that the exact mechanisms behind estrogen’s effects on stroke risk are not fully understood.

He added that: “Further research is needed to better understand the biological, behavioral, and social factors that may contribute to the link. Some potential mechanisms include the ability of estrogen to influence blood flow and the formation of blood clots, which can play a role in stroke risk.”

“Estrogen may also have protective effects on the brain and cardiovascular system. Estrogen is known to have a number of beneficial effects on the cardiovascular system, such as improving blood lipid levels, decreasing oxidative stress, and promoting blood vessel health. The relationship between estrogen levels and stroke risk is complex and can vary depending on various factors such as age, genetics, lifestyle, and hormone replacement therapy.”

– Dr. Alex Polyakov

In the Neurology paper, the researchers concluded that cumulative estrogen exposure from reproductive factors could be a useful indicator of a woman’s risk of different types of stroke after menopause.

We asked study author Dr. Peige Song of the School of Public Health at Zhejiang University School of Medicine, Hangzhou, China, about the study’s limitations.

She told us that “[s]ome limitations of the study include potential recall bias in the collection of reproductive factor information, and the inability to control for other factors that may impact estrogen exposure and stroke risk, such as genetics, early life experiences, and diet.”

“The major limitation of this study is that estrogen exposure was measured indirectly rather than through direct blood levels,” Dr. Adi Iyer, a neurosurgeon and neurointerventional surgeon at the Pacific Neuroscience Institute at Providence Saint John’s Health Center in Santa Monica, CA, not involved in the study, also told MNT.

Dr. Polyakov added as the study is observational, it can only establish a correlation and not causation. He further noted that the study was conducted only on Chinese patients, and so its findings may not apply to people from other populations.

“The implications of this study for the future of women’s health are very intriguing, and more studies regarding the cerebrovascular protection value of a higher lifetime estrogen exposure is needed,” Dr. George B. Branning, board-certified physician specializing in obstetrics and gynecology, from Biote Medical Faculty, not involved in the study, told MNT.

“Although hormone replacement therapy [HRT] is usually suggested for patients who want relief of their symptoms such as hot flashes, night sweats, weight gain, and mood changes, studies have shown that HRT is essential to lifetime functional bone health, sexual health, and cognitive protection. These new study results indicate we can perhaps add stroke protection to this growing list of benefits,” he added.

Dr. Manwani agreed that it is essential to know that longer cumulative estrogen exposure decreases stroke risk in postmenopausal women. She noted, however, that age at puberty onset or menopause is beyond a woman’s control.

“Therefore, it is important for clinicians to risk-stratify women with decreased estrogen exposure/ lower reproductive lifespan and work on controlling/ treating their other modifiable vascular risk factors aggressively, for example, hypertension, hyperlipidemia, atrial fibrillation, diabetes mellitus, smoking,” she explained.

“[These findings] also open up another debate about the role of estrogen in stroke. Is it good or bad? More studies on estrogen replacement therapy are needed to identify if increasing the estrogen exposure by use of hormone therapy would be beneficial,” she concluded.

November 26, 2022

High amounts of salty foods could double stress levels, study finds

A photo collage of salt and a young male eating a hotdog and fries — A the latest European review showed that excess salt consumption doubled the peak tension reaction in mice. Structure by MNT: Pictures by Benjamin Torode/Getty Photos & Milko/Getty Photographs

Though the actual physical results of extra salt intake are well documented, researchers have yet to comprehend how high salt use impacts psychological very well-becoming.
A recent European examine showed that a salt-rich diet can double the peak pressure response in mice.
Scientists are also on the lookout into how high salt intake may well induce nervousness and aggression.
They hope to see governments and meals makers collaborate to reduce salt in processed foodstuff.

Salt is recognized to make improvements to the style of lots of meals, which may well tempt consumers to get additional processed, salt-laden products. Common processed food items include things like commercially packaged bread, cereals, deli meats, soups, cheese, and prompt noodles.

Expanding proof demonstrates that far too substantially salt in the diet plan can wreak havoc on the body’s cardiovascular and renal methods.

Just lately, experts at the University of Edinburgh in Scotland theorized that large salt use could also impose worry on the brain. The final results from the experiment showed that large salt consumption could elevate tension hormone production.

The review connected the use of huge quantities of salt-wealthy foods to the activation of the hypothalamic-pituitary-adrenal (HPA) axis, the body’s anxiety response system. The scientists also found a significant-salt eating plan led to will increase in glucocorticoids, in a natural way happening hormones that aid control worry response and cardiovascular, cognitive, immune, and metabolic features.

Matthew Bailey, Ph.D., guide author of the review and professor of renal physiology at the University of Edinburgh’s Centre for Cardiovascular Science, told Clinical Information Nowadays:

“We are what we consume, and comprehending how superior-salt food changes our psychological wellbeing is an vital phase to strengthening nicely-becoming. We know that having much too a lot salt damages our coronary heart, blood vessels, and kidneys. This research now tells us that significant salt in our foodstuff also adjustments the way our mind handles pressure.”

The study staff hopes that their operate will really encourage a lot more community health and fitness guidelines that boost the reduction of salt in processed foodstuff.

The conclusions look in Cardiovascular Investigate.

Sodium is an essential component that aids control the movement of vitamins in and out of cells. The human overall body necessitates only a smaller volume of sodium, which combines with chloride to make up widespread table salt.

In accordance to the 2020–2025 Nutritional Recommendations, Us residents ought to take in much less than 2,300 milligrams (mg) of sodium everyday. But the Facilities for Disorder Manage and Prevention (CDC) estimates People eat more than 3,400 mg each individual working day.

Evangeline Mantzioris, a dietitian and system director of nutrition and meals sciences at the University of South Australia, mentioned the epidemic of large salt in an April 2022 podcast. She was not associated in the current analyze.

When we try to eat too much salt, Mantzioris stated: “It gets absorbed into our intestine and our blood […] It draws fluid into the blood vessels [and] boosts the blood force towards the blood vessel wall — and this is what we connect with substantial blood force.”

She extra that growing older and specified wellness disorders, like preeclampsia, very low delivery fat, and continual kidney illness, can maximize salt sensitivity. In convert, “our physique is a lot less ready to offer with all the processes that it wants to continue to keep healthy,” she mentioned.

Dr. Bailey and his colleagues examined their speculation on commercially sourced male mice. They fed the mice with possibly a command, lower sodium diet regime or a substantial-salt diet.

The researchers measured strain hormone degrees in the early morning and night for up to 8 weeks. They took blood samples to assess the HPA axis response to stress.

Further more, the researchers gathered and analyzed tissue samples for genetic details about the hypothalamus, liver, kidney, and coronary heart.

The study’s authors concluded that their investigate showed “functional evidence of a novel, direct connection concerning dietary salt ingestion and HPA axis activation.”

Superior salt consumption led to large salt degrees in the blood, a problem named hypernatremia, as perfectly as fluid imbalance. Though the rodents had totally free accessibility to drinking water, they experienced an “activation of a h2o conservation response.”

The scientists proposed that a “high-salt diet is emerging as an critical behavioral modifier, at minimum in rodents.”

This analyze focused on male mice, which may restrict extending some of the results to individuals.

The COVID-19 pandemic restricted research capabilities, so the authors could not examine salt intake and HPA action in female mice.

“In humans, the volume of the hormone that appears in the urine is better in persons that try to eat extra salt, and this is genuine in women and guys,” Dr. Bailey claimed.

“There is also proof that this stress system (hypothalamic-pituitary-adrenal axis) reveals sex-diverse response[s] to strain. In females, the immediate reaction is often bigger, and above time, women have a greater danger of building some styles of pressure-linked psychiatric conditions. My speculation is that the outcome of salt would be bigger in women.”

The researchers believe that their function “warrants systematic investigation simply because detrimental improvements in mind wellbeing in response to superior nutritional salt ingestion could have critical serious-environment outcomes.”

Dr. Bailey shared his options for long run trials:

“We are arranging a study in nutritious volunteers where by we supply meals to management the amount of salt and request people today to undertake jobs this kind of as issue-resolving towards the clock. We know that these duties activate the worry program: we can evaluate the hormone in saliva and coronary heart price.”

Considering that excess salt provides an urgent wellness problem, Dr. Bailey hopes that governments will winner the result in of decreasing salt in processed foodstuff.

“For most governments, this needs to be functioning with food items makers to minimize sodium information in staple meals merchandise […] The techniques that have worked most effective have been collaborative partnerships to build agreed time-dependent targets for reduction, independently monitored.”

– Matthew Bailey, Ph.D., lead creator of the research

Dr. Bailey also advised changing table salt with minimal-salt solutions these kinds of as sodium chloride or potassium chloride. He cited modern research attesting to their usefulness.

Nevertheless, not all salt may possibly be undesirable for you, according to Mantzioris. The dietitian maintained that the amount of money of desk salt we sprinkle on our meals is commonly wonderful. But she warned that the salt danger lies hidden in ultra-processed foods.

“Rather than being worried about what you might incorporate in the cooking or at the desk, have a closer glimpse at the amount of money of salt that is in the processed foods you acquire,” Mantzioris reported.

Posted on October 28, 2022
Cox Automotive Lowers Full-Year New-Vehicle Sales Forecast as September Volumes Hold Steady at Low Level; Q3 Sales Nearly Equal to 2021 Levels

Up-to-date, Oct. 3, 2022 – With the books closing on 3rd-quarter new-car or truck income, the market indeed—as forecast—is trapped in a very low equipment. At a model level, product sales results are markedly inconsistent. Hyundai and Kia are confirming file results General Motors and Toyota concluded the quarter with sturdy figures. Others, such as Buick, Nissan and Honda, go on to struggle. At an marketplace degree, just the reverse is real. New-car or truck product sales volumes have been on a remarkably dependable streak, averaging about 1.1 million units a thirty day period for extra than a 12 months now. Yr to day, new-auto profits are down more than 10{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} vs . 2021 and are on study course to finish at the lowest stage in a ten years.

Past week, during the Cox Automotive Q3 Forecast simply call, our workforce reduced its comprehensive-calendar year gross sales forecast to 13.7 million models and confirmed anticipations that new-motor vehicle profits in Q4 would continue on to reside in the 1.1 million neighborhood, held in look at by substantial rates, limited stock and softening desire. Greater curiosity charges are starting to right impression the new-motor vehicle market place, knocking some prospective buyers to the sidelines. As Main Economist Jonathan Smoke mentioned on the call, subprime purchasers accounted for about 14{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of the new-vehicle marketplace in 2019. Now, subprime potential buyers account for just 5{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809}, and deep subprime prospective buyers have all but disappeared. Bigger loan charges are impacting brand name-degree gross sales inconsistently. The bigger premiums will also probable tilt the U.S. marketplace even more into luxury territory, as substantial-profits vehicle consumers are typically in a position to spend income or secure much better mortgage costs.

There are indications that some automakers in Q3 started leaning far more heavily into fleet revenue to offset slowing retail need, but that is the exception, not the norm. For the most component, new-car stock is superior than it was 1 year back, but it continues to be relatively limited. A huge the vast majority of sellers are equipped to offer autos before they get there at the dealership, trying to keep accessible stock amounts quite low. We count on business-vast incentive stages to remain traditionally lower as very well, despite the fact that the Market Insights workforce will be thoroughly looking at sure automakers with high degrees of stock.

Total, in overall, September and Q3 new-automobile sales appear to have landed about exactly where we experienced forecast—roughly equal to yr-back amounts. Brace for a lot more of the exact same in Q4.

ATLANTA, Sept. 28, 2022 – September U.S. vehicle revenue, when verified upcoming week, are anticipated to show a new-motor vehicle sector primarily unchanged from past months and nevertheless trapped in minimal equipment. In accordance to the Cox Automotive forecast produced nowadays, September U.S. new-motor vehicle income are expected to finish in close proximity to 1.10 million models, with a gross sales rate, or seasonally modified once-a-year fee (SAAR), of 13.3 million. Revenue volume in September is anticipated to display an increase of practically 8{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} over final yr but end down pretty much 4{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} in contrast to very last month. The decline in comparison to last thirty day period is largely attributed to 1 much less promoting day.

In accordance to Charlie Chesbrough, senior economist at Cox Automotive: “New-auto sales have been remarkably dependable by means of the 3rd quarter, with profits of somewhere around 1.1 million units every single thirty day period in July, August, and September. New-car stock has been keeping steady, with days’ offer close to 40.”

With the September final result, complete new-automobile gross sales in the third quarter are forecast at 3.4 million units, down fewer than 1{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} from Q3 2021 and down only modestly from the 3.5 million units marketed in Q2 2022. For comparison, income in Q3 2019 achieved 4.3 million. Normal Motors, Ford and Tesla will be amongst the major gainers yr about 12 months in Q3, with numerous Japanese brands, still battling with inventory challenges, scheduling the most sizeable declines, notably Honda and Nissan.

One particular calendar year in the past, the new-auto marketplace began suffering a considerable deficiency of inventory, and the gross sales rate fell to 12.3 million in September 2021. Stock has improved given that but stays effectively under pre-pandemic levels. Additional Chesbrough, “The offer shortage has likely designed some pent-up demand—folks who have been in essence waiting in line for stock to return. But the modern improvements in the financial outlook from soaring curiosity rates is beginning to chip away at demand, and the waiting line for new autos is probable getting substantially shorter.”

With no noteworthy inventory enhancement forecast in the fourth quarter and waning new-automobile need, Cox Automotive has decreased its whole-yr forecast to 13.7 million units, down from 14.4 million. Gross sales in 2022 are projected to finish down a lot more than 9{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} compared to 2021 and at the lowest stage in a ten years.

September 2022 Income Forecast Highlights

New-automobile gross sales volume is forecast to rise 7.7{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} from September 2021 but decline 3.9{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} from final month.

The SAAR in September 2022 is believed to be 13.3 million, higher than final year’s 12.3 million level and up .1 million from previous month’s tempo.

September 2022 had 25 offering days, just one a lot less than August but equal to September 2021.

September 2022 Product sales Forecast Highlights

Complete product sales keep regular through Q3, consistently at 1.13 million models a month. Calendar year-to-date income at the finish of Q3 are predicted to be down virtually 13{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809}.

Common Motors retains the top location as the best-advertising automaker in the U.S. market in Q3, thanks partly to stock improvements versus 2021.

Tesla is forecast to achieve share again in Q3 and maintain the top rated location as the ideal-advertising luxurious automaker in the U.S.

All percentages are dependent on uncooked quantity, not each day advertising price.

About Cox Automotive
Cox Automotive Inc. can make obtaining, offering, owning and employing vehicles less complicated for every person. The world company’s a lot more than 27,000 staff associates and relatives of makes, including Autotrader®, Dealer.com®, Dealertrack®, Kelley Blue Book®, Manheim®, NextGear Capital®, VinSolutions®, vAuto® and Xtime®, are passionate about helping hundreds of thousands of auto buyers, 40,000 automobile seller consumers across five continents and lots of other people all over the automotive industry thrive for generations to occur. Cox Automotive is a subsidiary of Cox Enterprises Inc., a privately-owned, Atlanta-based enterprise with annual revenues of nearly $20 billion. www.coxautoinc.com

Media Contacts:
Mark Schirmer
734 883 6346
mark.schirmer@coxautoinc.com

Dara Hailes
470 658 0656
dara.hailes@coxautoinc.com

Posted on April 23, 2022
Exercise may protect brain health by keeping insulin, BMI levels low

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How does exercise protect brain health? New research sheds light. Suhaimi Abdullah/NurPhoto via Getty Images

Existing studies show that exercise helps protect brain cells through mechanisms that researchers do not yet fully understand.

Researchers know that exercise increases brain glucose metabolism, which correlates with improved brain function.

Studies show that exercise affects insulin resistance and has a complex relationship with body mass index (BMI) levels.

A new study suggests that exercise plays a role in maintaining insulin and BMI levels, which may help stave off dementia by protecting gray matter volume in the brain.

A new study investigates the mechanisms involved in the relationship between exercise and brain health.

Previous research had shown that larger gray matter volume can help protect against dementia by improving brain function.

The new study shows that insulin resistance and BMI mediate the relationship between larger and smaller brain gray matter volumes (the part of the brain involved in processing information).

The research is published in the April 2022 online issue of Neurology, the medical journal of the American Academy of Neurology.

The corresponding author of the study was Dr. Geraldine Poisnel, of the Inserm Regional Research Center, in Caen, Normandy, France.

The study involved 134 people with an average age of 69 who had no memory problems. The participants filled out a physical activity survey covering the past 12 months. They also had brain scans to measure glucose metabolism and brain volume.

The metabolism of glucose in the brain provides fuel for the brain by generating adenosine 5′-triphosphate (ATP) — a key molecule for maintaining the health of neurons and other cells. ATP is also key for generating neurotransmitters. Reduced glucose metabolism in the brain can be seen in people with dementia.

Gray matter development peaks at age 2–3 years. It begins to decrease afterward in some areas of the brain, but the density of the gray matter increases. From an evolutionary perspective, the higher processing ability of the human brain and its development are due to this increase in density.

In some studies, larger total brain volume, estimated by magnetic resonance imaging (MRI), has a weak correlation with higher intelligence in men and a very weak correlation in women with the ability to do well in intelligence tests.

In contrast, brain tissue deterioration and loss of volume is a significant contributor to lower cognitive ability later in life.

In the new study, researchers included 134 people with an average age of 69 who had no memory problems. The participants filled out a physical activity survey covering the past 12 months. They also had brain scans to measure glucose metabolism and brain volume.

In the new study, researchers gathered formation on cardiovascular risk factors including BMI and insulin levels, as well as cholesterol, blood pressure, and other factors.

The researchers examined the relationship between insulin and cardiovascular disease. The metabolic abnormalities that insulin causes raise the risk of cardiovascular complications, which in turn affect brain function.

Researchers found that insulin and BMI levels did not affect the metabolism of glucose in the brain.

The research demonstrated that the amount of amyloid plaque in the brain that contributes to Alzheimer’s Disease was not affected by exercise.

Medical News Today contacted Dr. Raeanne Moore, associate adjunct professor of psychiatry at UCSD in La Jolla, CA.

Dr. Moore, who was not involved in the study, was asked about the study results. She shared with MNT:

“This study adds to the growing body of research on the positive benefits of staying active on brain health, especially as we age.”

“[T]here is an urgent need to identify markers of cognitive decline,” added Dr. Moore. “Decreasing insulin levels and losing weight are modifiable factors that can be improved with a healthy diet and exercise.”

She added, “It was not surprising that higher physical activity was not associated with how much amyloid plaque people had in their brains. There is growing evidence that vascular risk factors on cognitive function are mediated by the amount of tau pathology in the brain and not an amyloid burden.”

MNT also spoke with Dr. Sheldon Zablow, assistant professor of medicine at University of California San Diego Medical School in La Jolla, CA. Dr. Zablow shared his comments about this study:

“Exercise has often been called food for the brain with many studies showing the benefit of exercise for improving brain health and reducing the risk of dementia.”

“This current research study states that physical activity improves cognitive brain function by reducing BMI and improving insulin metabolism. Improvement in weight control can limit the rate of brain volume loss, a known risk factor for dementia.”

“This study will help physicians reinforce the importance of regular exercise in reducing BMI as a low-cost means of limiting cognitive decline.”

– Dr. Zablow

Dr. Moore’s final remarks were, “The literature clearly demonstrates that cardiovascular risk factors are associated with cognitive decline and risk for Alzheimer’s disease and related dementias.”

“Studies investigating subtle brain changes prior to the development of dementia are critical to optimizing brain health and staving off cognitive decline.”

“Strengths of this study include a sample of cognitively normal older adults and the use of multimodal imaging methods to explore the role of CVD risk factors in the association between physical activity and neuroimaging biomarkers,” said Dr. Moore.

“[T]his methodology can move the field forward by helping to identify important markers of risk for cognitive decline.”

“A limitation to the study was the use of a self-report of physical activity […] which the authors acknowledged as a limitation. Self-report of physical activity is prone to retrospective recall bias, and objective tools to measure physical activity, such as fitness trackers, are more accurate.”

“These findings that insulin and BMI fully mediated the relationship between physical activity and whole-brain gray matter volume — and specifically hippocampal gray matter volume — provide further evidence that targeting these modifiable CVD risk factors could improve brain health.”

Posted on March 31, 2022
Dementia risk linked to blood sugar, cholesterol levels at 35

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A new analyze suggests cholesterol and blood sugar at age 35 support predict Alzheimer’s illness, which is just one of the main leads to of demise amongst Us residents 65 and more mature. Dani Ferrasanjose/Getty Images

Scientists not too long ago investigated the website link involving cardiovascular steps and Alzheimer’s ailment.

They observed that small superior-density lipoprotein (HDL or “good” cholesterol), significant triglycerides, and blood glucose amounts from age 35 are associated with elevated Alzheimer’s possibility.

The authors conclude that early intervention to keep healthful HDL, triglyceride, and glucose degrees could reduced Alzheimer’s danger.

Alzheimer’s sickness (Advertisement) is the fifth foremost induce of demise among the Individuals age 65 and older. There are no proven techniques to prevent or slow cognitive decrease brought about by Advert.

Experiments display that when vascular risk stress from age 55 predicts Advertisement, regardless of whether or not this hyperlink is present in younger individuals is unfamiliar.

Realizing how early this website link commences could support scientists understand additional about Advert as a life-training course disorder.

Lately, scientists from Boston College investigated the partnership amongst Ad and vascular measures utilizing longitudinal data.

They found that lower HDL cholesterol, higher triglyceride levels, and significant glucose amounts in the blood from age 35 are linked to Advertisement afterwards in lifetime.

The study seems in the journal Alzheimer’s and Dementia.

“Many people today know superior cholesterol is a danger component for heart disease and other health disorders, but they really don’t notice it’s a possibility factor for dementia also,” Dr. Katy Bray, community engagement manager at Alzheimer’s Investigation United kingdom, who was not concerned in the study, instructed Health care Information These days.

“To continue to keep the mind healthful as we age, the greatest proof is to try to eat a well balanced diet plan, not smoke, drink in suggested suggestions, exercise often, and hold blood pressure and cholesterol in look at.”

For the review, the researchers integrated knowledge from 4,932 folks who ended up a aspect of the Framingham Coronary heart Review. Participants experienced an typical age of 37 upon enrollment and underwent nine examinations just about every 4 yrs till the age of 70.

At every single examination, scientists calculated participants’:

HDL and lower-density lipoprotein (LDL or “good”)cholesterol

blood glucose ranges

system mass index (BMI)

systolic and diastolic blood pressure

amount of cigarettes smoked for each day

From the next evaluation onward, the contributors also underwent cognitive assessments to keep track of the development of cognitive decrease.

Following examining the information, the researchers uncovered an inverse partnership in between Advert and HDL measured at the initially, next, sixth, and seventh exams.

The study also inbound links Advertisement to increased triglyceride stages at the first, next, fifth, sixth, and seventh examinations, independent of medicine.

In the meantime, higher blood glucose was significantly connected to the development of Advert at each examination.

The researchers also found no affiliation between Ad and LDL, BMI, cigarette smoking, or blood pressure at any examination.

MNT also spoke with Dr. Allison B. Reiss, an affiliate professor of drugs at NYU Very long Island University of Drugs and a member of the Alzheimer’s Foundation of America’s Clinical, Scientific, and Memory Screening Advisory Board. Dr. Reiss was not concerned in this investigation.

“The mind is whole of cholesterol and wants cholesterol to create and make nerve cells,” she spelled out.

“The stability and transport of cholesterol inside of the mind are meticulously controlled, and lipids are quite critical in mind function. Most prominent of the lipid-connected proteins in the mind is ApoE, a protein that transports lipids in the brain and elsewhere.”

“Some HDL particles consist of ApoE (apoE-loaded HDL), and this sort of apoE-loaded HDL is most concentrated in the mind. The high quality and amount of apoE-wealthy HDL may well partly reveal the Alzheimer’s ailment-HDL connection,” she ongoing.

Xiaoling Zhang, Ph.D., assistant professor of medicine and biostatistics at Boston College College of Medicine, one of the study’s authors, explained to MNT that improved blood flow in the brain could possibly also make clear some of their conclusions.

She described that HDL could improve transportation and hence decrease the accumulation of amyloid-beta plaques, which are protein develop-ups attribute of Advertisement.

When asked about the website link concerning Advert and glucose levels, Dr. Zhang explained that higher glucose stages in the blood are joined to larger mind glucose concentrations and much more severe plaques in Advertisement brains.

“We know that the brain relies on glucose for electricity, but excessive glucose in the brain can endure chemical reactions that make it damaging and swelling-inducing. When glucose stages are higher over prolonged periods, long-term neuroinflammation may well consequence.”

– Dr. Reiss

“Another dilemma with large glucose is that it prompts the release of insulin to lower the glucose, and this can direct to wildly fluctuating sugar stages in the brain, which is really poor for nerve cells,” she discussed.

The scientists conclude that early intervention to keep wholesome HDL, triglyceride, and glucose stages may perhaps reduced Advert threat.

On the other hand, they also take note a number of limits to their get the job done. As their cohort was white, they say their results may perhaps not translate to other demographics.

They further more say that thanks to restrictions in their research design and style, their benefits might not accurately mirror age-certain tendencies. Considering the fact that the researchers did not acquire fasting blood samples at the very first two examinations, their final results could be a little skewed.

When requested about the major realistic takeaways from the analyze, Dr. Reiss said: “Eating fewer sugar and processed foodstuff and training regularly are excellent for each and every organ and primarily the mind and coronary heart. Checking blood glucose and the lipid profile and looking at HDL are excellent preventative measures.”

“We do not have prescription drugs that elevate HDL without creating a large amount of aspect results and, if the HDL is not of good good quality, raising it is pointless. For now, the finest way to aid HDL degrees is via exercising and actual physical action,” she concluded.

Posted on March 6, 2022
These US counties still have ‘high’ Covid-19 levels as their states lift mask mandates, CNN analysis shows

Florida’s Hillsborough County is one particular of them.

In that county on Wednesday, Gov. Ron DeSantis approached a group of pupils carrying masks who were being standing behind a podium at the University of South Florida, wherever the Republican governor was scheduled to hold a news conference. He instructed the college students, “You do not have to use these masks. I suggest, remember to choose them off.”

But in accordance to the CDC’s newest steerage, folks are suggested to nonetheless wear masks indoors in counties that have “superior” amounts of Covid-19, such as Hillsborough County.

The CDC stated Thursday that “far more than 90{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809}” of US residents are now in a area with small or medium Covid-19 community ranges. A CNN analysis of the facts finds that 7{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of the US populace is in counties with “superior” Covid-19 group ranges, down from 28{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} previous week.

DeSantis called the students’ mask-donning “preposterous,” but they ended up following CDC suggestions. Dr. Georges Benjamin, government director of the American Public Wellbeing Association, said DeSantis was “bullying” the students for putting on masks.

“Gov. DeSantis has confirmed himself to be somebody who does not comply with excellent science advice, naturally for political factors,” Benjamin told CNN on Thursday. “I was horrified at what he did.”

On Twitter, DeSantis spokeswoman Christina Pushaw doubled down on the governor’s feedback: “I signify, an individual experienced to say it, just after 2 a long time of propaganda that terrified and manipulated youthful men and women. Breathe totally free, truly feel safe and sound and be satisfied.”

Throughout the United States, most of the counties that continue to have substantial Covid-19 degrees, dependent on the CDC’s current metrics, may be afflicted by many things, Benjamin reported: small Covid-19 vaccination fees, constrained entry to health and fitness assets or the continuing spread of the Omicron coronavirus variant.

“Some of these areas ended up spots wherever Omicron kind of hit later on. So like Maine. If you look at Maine proper now, you would think, ‘Maine is extremely vaccinated why is Maine getting hit so greatly? They continue to have an outbreak going on there,’ ” Benjamin explained. “Perfectly, it can be due to the fact they received hit by Omicron afterwards.”

In which Covid-19 is still ‘high’ but mask mandates are lifting

Some of the counties that nevertheless have “significant” degrees of Covid-19 are in states that either never ever experienced indoor mask mandates or lifted their mandates previously on in the pandemic.

Last 7 days, California dropped its indoor mask mandate for unvaccinated persons. In that state, 11 counties have “large” degrees of Covid-19. Illinois also lifted its statewide indoor mask requirement and has six counties with “significant” concentrations of Covid-19.

Oregon and Washington prepare to lift their principles requiring masks in indoor community sites on March 11. There are four counties with “significant” levels of Covid-19 in Oregon and four counties with “high” amounts in the point out of Washington, in accordance to the CDC’s updated metrics.

Only 1 state and a single US territory — Hawaii and Puerto Rico — nevertheless have indoor mask mandates on the state or territorial level and have not introduced plans to raise individuals prerequisites.

Even in states the place indoor mask demands are lifted, counties can nonetheless require indoor mask-putting on on the nearby degree, Benjamin told CNN.

“The states are stating, ‘OK, we governors are no more time heading to manage it statewide. We’re now likely to lift a mandate from our point of view, and we are going to make it possible for you to customise this,’ ” he claimed.

With the updated county-level CDC metrics, “I feel the brilliance of what CDC did was, they were being able to pull the knowledge alongside one another at the neighborhood neighborhood degree — to allow neighborhood communities to make individuals decisions when to consider masks [off]. But it also presents them the capacity to re-mask, improve screening plan as they will need to, open and shut items,” Benjamin explained. “I would hope this not only puts it again in the fingers of regional elected officers but it also, I would hope, even a lot more powerfully, places it back in the fingers of neighborhood public health and fitness officials. That’s what I hope.”

The CDC’s “Covid-19 group amount” metrics are centered on 3 parts of info in a community: new Covid-19 hospitalizations, medical center capacity and new Covid-19 instances. The CDC’s internet site consists of a record of US counties and their current Covid-19 stages.

Beneath the CDC guidance, up to date last week, men and women in counties with very low or medium Covid-19 neighborhood stages no for a longer time have to have to wear masks indoors except they are immunocompromised or at “superior danger” for significant Covid-19 and if so, the CDC endorses to communicate to their wellbeing treatment company about sporting a mask.

In places with “superior” Covid-19 community levels, the CDC advises anyone to don a mask in public indoor options, like schools.

At all group concentrations, the CDC also endorses persons get vaccinated and boosted, and get tested if they have indicators.

The CDC’s new metrics are calculated at the county level to make it possible for for a “far more focused” being familiar with of the results of the coronavirus regionally and to inform own steps, these kinds of as mask carrying, as well as community policy decisions, Adriane Casalotti, chief of federal government and general public affairs at the National Association of County and Town Wellbeing Officials, wrote in an e mail to CNN on Thursday.

“Having said that, there are two difficulties for protecting masking specifications at a nearby plan stage. A single would be condition rules that prohibit this kind of action,” Casalotti wrote. “Yet another is less formal: the tension of taking further action. In particular as several in the community want to transfer further than the pandemic, it can be a challenge to proceed insurance policies like indoor masking necessities, even if it tends to make sense scientifically because of to community problems.”

Total, it can be tricky to keep track of regardless of whether there has been an overall shift in mask mandates currently being lifted in locations that continue to have “higher” Covid-19 degrees, Casalotti mentioned.

“This is more durable to observe as a lot of locations dropped — or ended up in the course of action of moving away from — formal masking specifications even right before the new, extra qualified metrics ended up launched,” she wrote.

“In some of all those locations, regional policy often shifted from indoor masking requirements to powerful recommendations for indoor masking or supporting enterprises to make individuals conclusions location by locale,” she additional. “In these areas, the burden is truly put on the unique to know the position of the virus in their local community, how to attain high-top quality masks, and when and wherever to use them to guard by themselves and their families.”

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