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Healthy lifestyle, diet linked to slower memory decline

Healthy lifestyle, diet linked to slower memory decline

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A study found a link between healthy lifestyles and slower memory decline in older adults. Shestock/Getty Images
  • Researchers followed 29,072 older adults (60 years old and over) over 10 years to investigate the link between lifestyle choices and memory loss.
  • They found a link between a healthy lifestyle and slower memory decline, even in the presence of the APOE Ɛ4 gene, which is associated with Alzheimer’s disease.
  • The researchers hope their findings will inform public health initiatives seeking to prevent memory loss in older adults.

The gradual loss of thinking abilities such as memory, reasoning, and psychomotor speed is a natural part of aging. However, studies such as the FINGER clinical trial have shown that it is possible to prevent cognitive decline through lifestyle improvements.

The impact of lifestyle factors on memory has been the subject of many studies. However, previous research typically focused on a single lifestyle factor, such as diet, physical activity, smoking, or drinking. Understanding the combined effect of multiple lifestyle factors on memory decline is important.

For this reason, Dr. Jianping Jia, Ph.D., neurologist and professor at Capital Medical University, Beijing, China, and his colleagues investigated the combined effects of six lifestyle factors on memory decline in a large study population over a 10-year period.

In an interview with Medical News Today, Dr. Jia said:

“[E]ffective strategies for protecting against memory decline may benefit a large number of older adults. Our results showed that adherence to a combination of healthy lifestyle behaviours was associated with a slower memory decline in older adults, including those genetically susceptible to memory decline.”

The results of the study appear in the BMJ.

Dr. Richard J. Caselli, professor of neurology at the Mayo Clinic, who was not involved in the study, described the study as “well done and generally supportive of findings from studies such as the FINGER study, this time in a Chinese population.”

The researchers recruited 29,072 study participants from North, South, and West China aged 60 or older with typical cognitive functions. Their mean age was 72.2 years, and 51.5{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} were men.

Genetic testing at baseline showed that 20.43{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of the study participants were carriers of the APOE ε4 gene, the strongest known risk factor for Alzheimer’s disease and related dementias.

The researchers followed up with the participants at intervals over the next 10 years, in 2012, 2014, 2016, and 2019.

At baseline and each follow-up, the researchers assessed the participants’ memory using the Auditory Verbal Learning Test (AVLT), which includes measurement of immediate recall, short delay-free recall (3 min later), long delay-free recall (30 min later), and long delay recognition.

For this study, Dr. Jia and colleagues used American guidelines and the findings of previous studies to define a healthy lifestyle. They identified six factors:

  • a healthy diet – adherence to the recommended intake of at least 7 of 12 eligible food items (fruits, vegetables, fish, meat, dairy products, salt, oil, eggs, cereals, legumes, nuts, and tea)
  • regular physical exercise – at least 150 minutes of moderate-intensity activity or at least 75 minutes of vigorous-intensity activity per week
  • Active social contact (participation in meetings or attending parties, visiting friends or relatives, traveling, and chatting online) – at least twice per week
  • active cognitive activity (writing, reading, playing cards, mahjong, and other games) – at least twice per week
  • never smokes (participants who had smoked less than 100 cigarettes in their lifetime) or used to smoke (participants who had quit smoking at least 3 years before the study)
  • never drank alcohol or drank occasionally

Researchers categorized participants into groups depending on their number of healthy lifestyle factors:

  • 0-1 healthy lifestyle factors = unfavorable lifestyle (6967 participants)
  • 2-3 healthy lifestyle factors = average lifestyle (16,549 participants)
  • 4-6 healthy lifestyle factors = favorable lifestyle (5556 participants)

All participants’ mean memory test scores declined continuously over the decade, consistent with how memory declines with age. However, the highest memory test scores were observed in the favorable lifestyle group and the lowest in the unfavorable lifestyle group, indicating that participants with favorable lifestyles had slower memory decline than those with unfavorable lifestyles (by 0.028 points/year).

The results showed that a healthy diet had the strongest effect on memory, followed by an active cognitive activity, regular physical exercise, active social contact, never or former smoking, and never drinking.

This study did not identify the mechanisms responsible for modifying memory loss. However, the researchers hypothesized that they might include “reduced cerebrovascular risk, enhancement of cognitive reserve, inhibition of oxidative stress and inflammation, and promotion of neurotrophic factors.”

Dr. Caselli told MNT that the “findings echo heart healthy behaviors (diet, exercise, no smoking in particular), with the addition of active social and cognitive activity, [and] cardiovascular health […] in turn is important for our cognitive health, so whether directly or indirectly [beneficial to memory], these findings seem credible and consistent with other well conducted studies.”

Dorly J.H. Deeg, Ph.D., professor of epidemiology of aging at Amsterdam University Medical Center, who was not involved in the study, also praised the study for its large and varied sample population and the numerous analyses supporting the findings.

The APOE ε4 allele, present in 20.43{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of the study participants, is correlated with earlier and more rapidly progressive memory decline and represents a major risk factor for Alzheimer’s disease.

In this study, the researchers observed that a healthy lifestyle positively affected memory in all participants, regardless of whether they carried the APOE ε4 allele or not.

“[W]e find there are some people who are disheartened by finding they are an ε4 carrier […] The findings of this study will hopefully give such people hope that they can actively mitigate their genetically based vulnerability,” said Dr. Caselli.

In their paper, Dr. Jia and colleagues identify several study limitations, including that lifestyle factors were self-reported and thus prone to measurement errors. Furthermore, memory was evaluated using a single neuropsychological test. They also acknowledge the study design did not assess if a healthy lifestyle started affecting memory before the age of 60.

Dr. Caselli told MNT that the possibility that some participants were in the preclinical stage of Alzheimer’s disease cannot be excluded. “Though this entailed a 10-year follow-up, the preclinical phase of Alzheimer’s disease is closer to 20 years so things like social and cognitive activity may already start to decline in subtle ways before a person with preclinical stage disease develops overt symptoms and is diagnosed with MCI [mild cognitive impairment],” he said.

In comments to MNT, Dr. Deeg pointed out that the researchers “excluded a huge number of participants (30{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of eligible persons).” In the study paper, “[t]his is described as ‘younger than 60 years, refused to participate, etc’. As a reviewer, I would not think this is a satisfactory explanation,” she said.

Dr. Deeg told MNT that the findings of observational studies such as this one “should be replicated in randomized controlled trials.”

“Such trials have been performed – usually with only one lifestyle factor, mostly physical activity. Unfortunately, the findings are not unequivocal, and a recent JAMA article showed no effects,” she added. “So, we have some way to go to find out what intervention would work, and why – and for this, we need to know what the underlying mechanisms in the brain are.”

In an editorial linked to this study, Séverine Sabia, Ph.D., research professor at Université Paris Cité in France, and Archana Singh-Manoux, Ph.D., research professor at University College London recommend that future research focuses on “identifying not only the factors that matter most but also the threshold at which they matter, and the age when intervention is likely to be most effective.”

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Brain zapping devices to improve focus grow in popularity

Brain zapping devices to improve focus grow in popularity

In 2021, Craig Gibbons was identified with Lyme illness. His doctor approved him antibiotics, but the medication failed to reduce one of his most debilitating indicators: a long lasting mind fog that produced it challenging for him to focus or remember information.

So he went with a unique approach: at-residence mind stimulation.

About the past several several years, Gibbons had been experimenting with transcranial immediate existing stimulation, or tDCS, which provides weak electrical currents to the mind by means of electrodes connected to the head.

Brain stimulation comes in lots of diverse forms, but they are all centered on the very same thought: sending small zaps to certain parts of the brain to change its action. Some of its makes use of are properly-set up: transcranial magnetic stimulation is utilized in hospitals and clinics as a way to deal with melancholy. Another version, deep brain stimulation, requires surgically implanting electrodes in the mind, and has been made use of for many years to ease signs and symptoms of Parkinson’s sickness.

Gibbons, 32, of New York Town, experienced listened to it could be made use of to alleviate signs of brain fog.

“It assisted wake me up a very little little bit and get factors heading,” he reported.

Most brain stimulating techniques involve placing electrodes — conductors as a result of which electricity travels — on certain parts of a person’s head. These electrodes send out very small electrical impulses through the cranium to the brain. 

Health care employs of mind stimulation generally choose position in hospitals or doctors’ workplaces. But the use of at-property mind stimulation products is flourishing amid a team of enthusiasts, who say it enhances their mental state and provides them an edge, like on an approaching examination or a project at perform. Many others credit it as a way to realize further meditative states or psychological clarity.

The at-residence devices are out there on the net and generally variety in charge from as minimal as $40 to around $500. They are commonly no greater than a television distant or a smartphone batteries, head caps and straps, saline and other components required to send out the weak pulses of electric power to the mind are in some cases bought independently. 

Several of them are marketed as having clearance from the Foodstuff and Drug Administration, which involves a considerably less rigorous critique method than what’s necessary for Fda approval.

Irrespective of their escalating attractiveness, lots of researchers oppose the use of the gadgets at home mainly because not considerably is regarded about their basic safety in the extensive time period, said Robert Reinhart, a neuroscientist at Boston College.

“We are chatting about injecting energy into someone’s mind. An individual could get harm,” he reported. “We need to have to greater realize what these instruments can do which includes any unintended consequences they may possibly have.”

Science in its early stages

Anna Wexler, an assistant professor of medical ethics and overall health plan at the University of Pennsylvania, experiments why and how people today use mind stimulation at house. She’s found that individuals are utilizing the units to handle psychological health problems or to boost psychological overall performance.

“Depression and stress and anxiety are the best two indications for persons,” Wexler explained. “But other factors people today used it for have been for improvement, so to strengthen concentrate, to boost memory, items like that.”

At-residence brain stimulation commenced in earnest in the early 2010s, Wexler reported, in spite of pushback from clinicians and scientists, who have been concerned about basic safety.

“They weren’t much too delighted that persons were primarily making use of the exact same technology as they were executing but doing it at home, so working with similar devices to promote their very own brains with lower degrees of electric power at residence,” she stated.

The science at the rear of why electrically stimulating the brain seems to aid memory and wondering qualities is however in the early phases, Wexner mentioned.

Reinhart led a examine, printed in August in the journal Nature Neuroscience, that uncovered that offering modest electrical zaps to the mind appeared to strengthen memory in a team of older grown ups for at the very least one month. The examine incorporated 150 people today ages 65 to 88 who did not have a identified neurological condition. Individuals have been asked to wear a cap embedded with electrodes for 20 minutes on 4 consecutive days. The sort of stimulation was similar to transcranial immediate recent stimulation, but employed a various kind of electrical existing.

The results proposed that aside from its scientific use, mind stimulation could a single day come to be mainstream, comparable to the way men and women use caffeine to enhance alertness, he mentioned.

“You can imagine a foreseeable future perhaps where by men and women are employing stimulation,” Reinhart stated. “I assume men and women are just overwhelmingly fascinated in augmenting their capability to supply a sort of cutting-edge edge.”

On the internet buzz

Transcranial immediate present-day stimulation has obtained traction on the web. The subreddit r/tDCS is dedicated to talking about the science, engineering and use of mind stimulation units. The group offers additional than 16,000 users.

Phil Doughan, 66, of McLean, Virginia is among them. 

He said he became intrigued in brain stimulation immediately after listening to a podcast on Radiolab, as properly as an audiobook, both of those on the topic.

In January, he bought a tDCS product from health-related tools provider Caputron for about $450, with the hope that it would improve his meditation exercise, as effectively as enable clear brain fog, which he attributed to his age.

“I am not on the lookout to take care of just about anything I perceive as damaged I am on the lookout for advancement in my brain,” Doughan stated. 

Kathie Kane-Willis, 53, of Michigan, explained she’s been working with a tDCS machine that she procured on-line for $250 to aid alleviate some of her prolonged Covid indications, including mind fog.

Considering that paying for the device very last spring, she reported, quite a few of her signs and symptoms have eased. 

“I’m not as brain foggy,” stated Kane-Willis, who takes advantage of the gadget for 20 minutes at minimum 2 times a day. “It definitely calms you down it’s nearly like meditating.”

But no matter whether the at-home equipment really aid enhance people’s mental effectiveness is up for discussion, Reinhart said, noting that the community adoption of tDCS is occurring speedier than the accumulation of scientists’ understanding about the process.

Wexler said she doesn’t hope brain stimulation to achieve mainstream achievements till scientific tests conclusively show that it gives true rewards.

“The baseline query is whether this is in fact doing work,” she stated. “It could be a placebo, it could not be doing the job at all.”

To Dr. Michael Fox, an affiliate professor of neurology at Harvard Health care Faculty, it is no shock that at-dwelling brain stimulation has acquired a lover foundation.

“The promise of getting capable to noninvasively put on a cap for 20 minutes a day and improve or increase your cognitive functionality is anything that will get men and women psyched,” he reported.

However, he explained buyers need to carry on with warning. In a 2016 editorial in the journal Annals of Neurology, Fox warned that at-home mind stimulation comes with some hazards, some additional readily apparent than other individuals.

Recognized aspect effects can include things like itching, tingling sensations or little burns. Proponents of at-property use argue that these aspect results are minimal, and individuals should be equipped to use them at their individual possibility, he reported.

But mind stimulation could have extra wide-ranging results: it may possibly enhance some cognitive qualities at the expense of other people, Fox explained. And while the electrical zaps are specific, stimulation affects much more parts of the brain than the user might believe.

Fox claimed he would prefer that individuals intrigued in brain stimulation use it under clinical supervision.

But for individuals in favor, he said, the argument goes, “we modify our brain purpose routinely with things like caffeine and liquor. I can acquire a cup of espresso off the shelf and I can invest in a beer off the shelf. And 1 argument is, why can’t I obtain a mind stimulation device off the shelf?”

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

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

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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.

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Does oral health influence brain health? New data outline link

Does oral health influence brain health? New data outline link

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Could oral health and fitness have a bearing on mind overall health? Impression credit history: NICK VEASEY/SCIENCE Photograph LIBRARY/Getty Images.
  • B​rain wellness influences how well the mind features in various areas of daily life.
  • Multiple elements contribute to constructive brain health, like life-style possibilities and practices.
  • Details from a current review propose that inadequate oral wellbeing might be connected to poor brain wellbeing.
  • Even further research is needed to fully realize how oral health impacts brain health.

The human mind controls physique capabilities — its wellness drastically influences a person’s well-getting. There is nevertheless much about the mind that scientists are still doing work to recognize, such as what aspects influence brain wellness.

In a new study, scientists from the Yale College of Medication in New Haven, CT, have found that folks who are genetically predisposed to poor oral wellness also are inclined to have poorer mind well being.

The conclusions indicate the have to have for further research into the whole influence of oral health and if fantastic oral patterns can positively influence brain well being.

The study authors are preparing to share the results of their investigation at the Intercontinental Stroke Meeting 2023.

The brain is a advanced organ controlling key functions in the entire body essential for keeping us alive. It lets persons to imagine, move, breathe, and specific emotion.

“B​rain health and fitness” is a wide time period that typically refers to the brain’s capacity to have out its typical capabilities, and a absence of neurological conditions that affect brain perform.

Lexi Watson, an Institute for Purposeful Medication Accredited Practitioner (IFMCP) and Reversing Cognitive Decline (ReCODE) 2. Certified Practitioner, who was not associated in the recent review, described to Health care News These days that, in the simplest conditions, “[b]rain health is the optimization of the lots of components that contribute to brain and cognitive perform in get to make it possible for your physique to attain its optimum expression of health.”

Several factors can affect brain health and fitness, and individuals can make way of life modifications that may perhaps impact it. For instance, restricting alcohol, quitting cigarette smoking, managing large blood stress, following a healthful food plan, and receiving plenty of actual physical exercise might all add to great brain wellbeing.

“Factors that add to brain health consist of nutrient concentrations and nutrition as effectively as tension levels and your body’s reaction to that pressure,” reported Watson. “By the way,” she additional, “stress is significantly additional than just psychological [or] emotional worry. Blood sugar imbalance, deficiency of good quality snooze, an overload of poisons, and ongoing irritation all lead to stress on the system.”

Researchers are even now functioning to recognize all the factors that lead to mind wellness and how persons can most effective get techniques to improve it.

The authors of the new research preferred to look at how oral well being impacts brain overall health. Examine writer Dr. Cyprien Rivier explained to MNT:

“The primary target was to examine the website link concerning bad oral wellness and mind overall health. We by now know that weak oral health and fitness improves the threat of stroke, but we did not know no matter whether poor oral health and fitness afflicted mind well being. Brain health is a constant evaluate that describes the practical status of a person’s brain using neuroimaging equipment these kinds of as MRI (magnetic resonance imaging). Studying oral well being is specifically critical due to the fact it is an effortlessly modifiable danger element: Absolutely everyone can effectively enhance their oral health and fitness with negligible time and economical expense.”

Scientists utilized a precise process identified as mendelian randomization, which entails searching at genetics and wellbeing results.

They analyzed knowledge from the United kingdom Biobank, picking out men and women who experienced in no way skilled a stroke. They seemed at in excess of 100 genetic variants related with poor oral wellness outcomes, this kind of as lacking enamel and cavities.

T​hey then appeared at mind scans to measure indicators of brain health. The scientists identified that the genetically-elevated possibility of inadequate oral overall health was connected with poorer mind overall health.

This provided a increased incidence of silent cerebrovascular disorder, which has an effect on the brain’s blood supply, and microstructural problems.

“People who have been genetically vulnerable to cavities, missing enamel, or needing dentures had a better stress of silent cerebrovascular condition, as represented by a 24{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} maximize in the sum of white matter hyperintensities seen on the MRI photos,” Dr. Rivier spelled out.

“Those with total genetically lousy oral health had greater hurt to the fine architecture of the brain, as represented by a 43{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} improve in microstructural injury scores seen on the MRI scans. Microstructural problems scores are complete-mind summaries of the harm sustained by the wonderful architecture of each individual mind area,” he extra.

Dependent on these conclusions, the study’s authors counsel that treating poor oral health and fitness early may well aid substantially boost mind wellbeing.

The study did have many limits that point out the want for more intensive investigate. Mendelian randomization effects point out a causal marriage involving the examined factors, but this is not fully selected.

For the reason that they applied knowledge from the Uk Biobank, which includes predominantly white British individuals as 94{cfdf3f5372635aeb15fd3e2aecc7cb5d7150695e02bd72e0a44f1581164ad809} of the contributors self-report as white, additional investigation could also include additional numerous cohorts.

Commenting on the results, Watson observed that they “confirm for me the importance of oral well being in total brain wellness.”

“What I would like to see upcoming is a analyze demonstrating what I see in follow, that taking treatment of your oral wellness can mitigate your genetic threat. Genes are not your future, just information and facts to enable steer your efforts in the right direction,” she emphasized.

Dr. Rivier also mentioned that this examine is a to start with stage and that confirming the investigate will consider time:

“One important upcoming move is to replicate these results in distinctive populations, especially groups from other races/ ethnic backgrounds. If this investigation is verified, using measures to make improvements to oral wellbeing could guide to important advantages at a population level. It should be pointed out that our research is preliminary, and additional proof wants to be collected, preferably via scientific trials, to present that increasing oral health and fitness in the populace leads to brain overall health positive aspects.”

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Longevity gene may help rejuvenate the heart by 10 years

Longevity gene may help rejuvenate the heart by 10 years

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Could a so-called longevity gene help restore heart health? Image credit: David Jean/EyeEm/Getty Images.
  • Studies have shown that the longevity-associated variant (LAV) of the BPIFB4 gene is associated with a longer lifespan in humans and has protective effects in rodent models of cardiovascular disease.
  • A new study shows that LAV-BPIFB4 may exert its cardioprotective effects by promoting the formation of new blood vessels and reducing the number of blood vessel cells that have become senescent and stopped multiplying.
  • The study indicates that inducing the expression of LAV-BPIFB4 in aged mice improved cardiac function and regulation of blood flow to the heart.
  • These findings highlight the therapeutic potential of LAV-BPIFB4 for attenuating the adverse effects of aging on cardiovascular function.

A recent study published in Cardiovascular Research suggests that LAV-BPIFB4, a gene variant that previous research ha shown to be highly expressed by individuals with an exceptionally long lifespan, could also protect cardiac and vascular function in old age.

In the new study, inducing the expression of LAV-BPIFB4 in aged mice led to improvements in cardiac function that, translated to the human context, would be equivalent to a reduction in the heart’s biological age by 10 years.

Study author Dr. Paolo Madeddu, professor of experimental cardiovascular medicine at Bristol University in the United Kingdom, told Medical News Today:

“It is known that centenarians can pass their healthy genes to their offspring. This study demonstrates that it is also possible to make human cardiac cells younger and older mice hearts by transferring a gene expressed by centenarians. We also demonstrate that the benefit is related to the ability of the gene to reprogram cardiac cells to become more resistant to stress and build up the machinery (ribosomes) that make proteins.”

The heart has four chambers — two upper chambers called atria that receive blood from the body, and two lower chambers called the ventricles that pump blood to the body.

The right atrium receives deoxygenated blood from the body, and the right ventricle pumps the deoxygenated blood to the lungs. The left atrium receives oxygen-rich blood from the lungs, which is then pumped into the left ventricle.

Upon the contraction of the left ventricle, oxygenated blood is transported to the rest of the body. The functioning of the heart itself requires oxygen and nutrients that are supplied by the coronary arteries.

Aging is associated with an increase in the risk of cardiovascular conditions, including heart attack, heart failure, and coronary artery disease. These cardiovascular conditions are caused by alterations in the structure and function of the heart and blood vessels, including the coronary arteries.

These changes include an increase in the thickness and stiffness of the walls of the coronary arteries and the left ventricle. The thickening of the left ventricle, known as left ventricular hypertrophy, can result in complications such as heart failure, which is the inability of the heart to pump sufficient quantities of blood to the body.

Another change associated with aging involves the dysfunction of endothelial cells, which form the inner lining of blood vessels and the heart.

Endothelial cells regulate the blood flow as well as the exchange of fluids and molecules between the blood and the tissue. The dysfunction of endothelial cells results in the narrowing of arteries and can increase the risk of cardiovascular diseases.

Endothelial cells also play an important role in angiogenesis, the process of formation of new blood vessels from preexisting ones. Endothelial dysfunction during aging is also associated with the reduction in the density of capillaries, the small blood vessels that transport oxygen and nutrients to tissues.

Thus, endothelial cell dysfunction can lead to a reduction in the blood supply to the heart muscle by coronary arteries, thus increasing the risk of a heart attack or myocardial infarction.

Pericytes or perivascular cells are cells that are embedded at intervals along the walls of capillaries and wrap around endothelial cells. Pericytes interact with endothelial cells to play an important role in the formation of new blood vessels and the maintenance of blood vessels.

Whilst the evidence is mixed, some studies have suggested that aging is associated with a decline in the coverage of endothelial cells by pericytes, resulting in increased permeability of blood vessels. Thus, in addition to endothelial cells, impaired pericyte function may contribute to cardiovascular diseases.

Previous studies have shown that certain individuals have an exceptionally long lifespan, and this trait is inheritable. These long-living individuals tend to show delayed aging and have a lower incidence of cardiovascular diseases.

Moreover, these individuals with a longer lifespan have higher circulating levels of LAV-BPIFB4.

Besides being present in the blood, BPIFB4 is also expressed by endothelial cells, cardiomyocytes or heart muscle cells, and some immune cells.

Inducing the expression of LAV-BPIFB4 in older mice can reduce deficits in endothelial function and promote angiogenesis. Research has shown that LAV-BPIFB4 can stop atherosclerotic plaque formation in mice. However, the ability of this protein to attenuate the effects of healthy aging on heart function has not been established.

In the present study, the researchers first examined the potential mechanisms underlying the protective effects of LAV-BPIFB4 in cardiovascular conditions.

They examined the differences in the hearts obtained from elderly ischemic heart failure patients undergoing heart transplantation surgery and those from individuals who died due to reasons other than cardiovascular complications.

The hearts obtained from ischemic heart failure patients showed lower expression levels of BPIFB4 in the cardiomyocytes and endothelial cells than individuals with healthy hearts. The hearts of ischemic failure patients also had lower capillary density than healthy hearts.

Moreover, there was a reduction in the density of pericytes and lower coverage of blood vessels by pericytes in hearts obtained from ischemic heart failure patients.

Among ischemic heart failure patients, individuals who expressed the LAV variant of BPIFB4 on both chromosomes showed a higher density of pericytes and greater coverage of capillaries by pericytes than those who carried a single or no copies of the LAV-BPIFB4 gene.

However, these groups did not differ in capillary density, suggesting that LAV-BPIFB4 preserves the coverage of capillaries by pericytes without influencing the capillary density.

The pericytes isolated from the hearts of ischemic heart failure patients showed greater expression of markers of oxidative stress and cellular senescence. Senescence refers to the permanent arrest of cell growth and is observed in response to cellular stress and aging.

The researchers found that the addition of LAV-BPIFB4, but not other forms of BPIFB4, to cultured pericytes isolated from the heart of ischemic heart failure patients reduced the expression of senescence and oxidative stress markers.

Pericytes from the hearts of ischemic failure patients also showed a downregulation of the protein synthesis machinery, which is associated with cellular aging. The addition of LAV-BPIFB4 led to the upregulation of the protein synthesis machinery in the pericytes isolated from the hearts of ischemic heart failure patients.

Previous studies have shown that endothelial cell senescence is associated with impaired angiogenesis. In subsequent experiments conducted using endothelial cell cultures, LAV-BPIFB4 enhanced the ability of senescent endothelial cells to form new blood vessels to a greater extent than other BPIFB4 variants.

LAV-BPIFB4 also increased the secretion of molecules that promote angiogenesis by pericytes isolated from the hearts of patients with ischemic heart failure.

Preincubation of pericytes from ischemic heart failure patients with LAV-BPIFB4 also enhanced the ability of these pericytes to support the formation of new blood vessels by senescent endothelial cells.

These results suggest that LAV-BPIFB4 could directly enhance the ability of senescent endothelial cells to form new blood vessels as well as indirectly by promoting the secretion of molecules by pericytes that act on endothelial cells. In other words, the LAV-BPIFB4 gene could help restore deficits in the function of aged vascular cells.

In their previous work, the study’s authors had shown that delivery of LAV-BPIFB4 using a viral vector, which involves the use of a harmless virus carrying the gene of interest, could enhance the expression of the protein in the heart of a mouse model of diabetes.

In the present study, the authors delivered either LAV-BPIFB-4 or a different BPIFB4 variant to middle-aged and old mice using a viral vector.

The aged mice showed a decline in cardiac function at baseline compared with middle-aged mice. The delivery of LAV-BPIFB4 to middle-aged and old mice was associated with an improvement in the function of the left ventricle.

Aging is also associated with a decline in the ability of the blood flow from coronary arteries to meet the demands of the heart muscle in response to exercise or stress. This is described in terms of coronary flow reserve, which is a ratio of the maximum increase in coronary blood flow in response to stress to the coronary blood flow at baseline.

To simulate the heart’s response to stress, the researchers used dobutamine, a drug that mimics the effects of beta-adrenaline released during stress.

Treatment with LAV-BPIFB4 increased coronary blood flow at baseline and in response to dobutamine in both middle-aged and older rats. This suggests that LAV-BPIFB4 could have helped restore deficits in coronary blood flow in response to stress.

These improvements in cardiac function after LAV-BPIFB4 treatment were accompanied by an increase in blood vessel and pericyte density and pericyte coverage in the hearts of middle-aged and older mice while reducing the number of senescent cells.

In addition to cardiomyocytes, the cardiac tissue also consists of fibroblasts, nerve endings, and immune cells. These cells are embedded in an extracellular matrix secreted by fibroblasts. The extracellular matrix consists of collagen and other proteins and plays a pivotal role in maintaining the structure and function of the heart.

Conditions such as aging and heart failure are associated with cardiac fibrosis involving the excess deposition of collagen in the extracellular matrix.

Cardiac fibrosis leads to the stiffness of the cardiac walls and a decline in cardiac function. In the present study, LAV-BPIFB4 treatment reduced the levels of myocardial fibrosis in the hearts of aged mice.

These results suggest that LAV-BPIFB4 could attenuate the effects of aging on cardiac function and structure.

Dr. Yu-Ming Ni, a cardiologist specializing in noninvasive cardiology at MemorialCare Heart and Vascular Institute at Orange Coast Medical Center in Fountain Valley, CA, explained that “this research study suggests that [the] LAV-BPIFB4 gene variant associates with better heart health and longevity, and improved heart health when used as a treatment in heart cells.”

“While these findings are promising, this finding will need to be tested in a research study involving people before it can be considered for improvement of heart health and longevity,” he nonetheless cautioned.

Posted on

Wednesday, February 1, 2023 | Kaiser Health News

Wednesday, February 1, 2023 | Kaiser Health News

Authorities Urge A lot more Girls To Take out Fallopian Tubes To Steer clear of Cancer

The radical stage is recommended for ladies with higher genetic threat for ovarian most cancers. Meanwhile, a new analyze implies obesity can result in related modifications in the brain to Alzheimer’s sickness. And Bloomberg experiences that some Us citizens are nonetheless ingesting poisonous bleach products and solutions as a overcome-all.


The New York Moments:
To Prevent Most cancers, Much more Ladies Should really Look at Eradicating Fallopian Tubes, Authorities Say 

There is no dependable screening examination for ovarian most cancers, so physicians urge women at substantial genetic hazard for the condition to have their ovaries and fallopian tubes eradicated as soon as they are completed obtaining children, generally around the age of 40. On Wednesday, a primary investigate and advocacy organization broadened that advice in strategies that may well surprise a lot of girls. (Rabin, 12/1)

In updates on mpox —


The Hill:
Community Overall health Unexpected emergency For Mpox Formally Ends 

The public wellness emergency for the mpox outbreak that commenced last year is officially ending as of Tuesday, with the number of noted conditions continuing to dwindle and advocacy teams declaring the emergency’s conclusion a victory for the LGBTQ local community. The Biden administration declared in December that it was not anticipating to renew the general public wellness emergency (PHE) for mpox, previously referred to as monkeypox, that was initially declared in August 2022. The PHE was renewed after in November. (Choi, 1/31)

In other wellbeing and wellness information —


NBC Information:
Obesity Can Lead to Variations In The Mind Comparable To Alzheimer’s, Examine Implies

Remaining chubby in midlife has been connected to better possibility of creating Alzheimer’s disease or dementia, and a new study reveals that mind adjustments in overweight persons mirror some of all those with Alzheimer’s. Researchers at McGill College in Montreal analyzed mind scans of extra than 1,300 folks in the very first analysis to straight review the designs of brain shrinkage in overweight men and women and in Alzheimer’s individuals. (Carroll, 1/31)


Stat:
Brain MRIs Reveal Effects Of ‘Toxic Stress’ On Black Children 

Stress filled experiences all through early childhood — particularly economic strife — appear to act as a poisonous stressor that can alter locations of the brain tied to the processing of tension and trauma, in accordance to a new study published Wednesday. The scientists uncovered that Black kids were impacted far more than white children, largely since of the greater quantities of poverty and adversity they facial area. (McFarling, 2/1)


Bloomberg:
Drinking Bleach Is Deadly. Why Are Some People However Consuming MMS?

Enter the term “Miracle Mineral Solution” into the search bar on Amazon.com, and, guaranteed adequate, there’s a vast selection of products and solutions that online reviewers say get rid of every thing from bronchial asthma to arthritis. The issue is that the get rid of-all potion normally recognized as MMS is, in essence, industrial quality bleach. And marketing this poisonous and in some cases lethal chemical concoction as drugs is illegal. (Brown, 2/1)


CBS News:
Layoff Survivor Guilt Is Authentic For Workers Who Endure Layoffs

Mass layoffs like these roiling the tech sector have an effect on additional than the individuals who reduce their jobs. Laid-off workers confront functional problems, these kinds of as staying economically afloat and securing new employment, as well as challenging emotions, like feeling turned down. Meanwhile, people who continue to be right after their colleagues are dismissed put up with from “survivor layoff guilt,” in accordance to office psychologists and layoff survivors them selves. (Cerullo, 2/1)

In environmental health information —


CNN:
The Dirtier Your Air, The Better Your Risk Of Melancholy Or Anxiousness, Analyze Finds

People today who live in a remarkably polluted region have a much bigger threat of melancholy and anxiety than individuals who reside with cleaner air, a new examine states. The review, revealed Wednesday in the journal JAMA Psychiatry, identified that folks who ended up exposed to greater amounts of a number of air pollutants for a very long interval – which includes particle pollution, nitrogen dioxide and nitrogen oxides – experienced an improved threat of depression and nervousness. (Christensen, 2/1)


United states Right now:
EPA Proposes Variations To Air High quality Expectations For Soot Pollution

Before this thirty day period, the Environmental Security Agency proposed bringing the restrictions down from 12 micrograms for every cubic meter to amongst 9 and 10. The Cleanse Air Act necessitates the EPA to review air quality specifications each and every five yrs – but this proposed revision is the very first in a decade to address soot levels. Some teams say the new limit is not sufficient, particularly for urban communities of color overburdened by pollution, outdoor staff and some others who are vulnerable. (Hassanein, 1/31)