Health
Scientists reveal the one practice that could prevent dementia as you age
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A lack of socializing may be a major risk factor for neurological disorders in older adults.
New research from the University of New South Wales (UNSW) in Sydney, Australia, has considered how “social frailty” can be a predictor of dementia.
The study, published in The Journals of Gerontology, looked at data from 851 people over the age of 70 in Sydney’s suburbs who did not have dementia at the time.
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The researchers evaluated social frailty using measures of social support, frequency of social interactions, sense of purpose, engagement in community or volunteer activities, and the individual’s perceived social roles and connectedness, according to a press release.
Based on this analysis, participants were classified as socially frail, pre-frail or non-frail.
Researchers considered levels of social connection among nearly 900 Australian seniors. (iStock)
The participants were followed for over 12 years, undergoing neuropsychological tests every two years to diagnose any new dementia cases. The researchers adjusted for other factors like physical frailty, psychological frailty and health history.
The study concluded that social frailty was associated with a higher risk of dementia, with socially frail individuals facing about a 47% increased risk compared to those in the non-frail group.
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In most socially frail people, the factors that were most strongly associated with this risk included low financial and family satisfaction, infrequent social contact and limited participation in social activity.
Study co-author and clinical psychologist Dr. Suraj Samtani, UNSW Sydney postdoctoral research fellow at the Centre for Healthy Brain Ageing, emphasized the consequences of aging people lacking in social connections.
“Social isolation is the biggest risk factor for dementia” late in life, the lead researcher said. (iStock)
“In midlife, risk factors like hearing loss and metabolic syndromes like hypertension and diabetes are very important to prevent and manage,” he said in the press release. “But in late life, social isolation is the biggest risk factor for dementia.”
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In an interview with Fox News Digital, co-author and postdoctoral research fellow Dr. Annabel Matison noted that the study population was “generally healthy, well-educated and Caucasian.”
While the researchers would like to confirm these findings among a broader group, Matison commented that the strength of the association between socialization and cognitive decline is “noteworthy.”
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“We hope these findings raise awareness that poor social connections, resources and support are risk factors for dementia,” she said. “We encourage older adults to stay socially active with family, friends and neighbors, and to consider volunteering.”
Aging slowly and staying active
Another recent study by researchers at Cornell University found that social relationships can actually slow cellular aging.
Lead study author Anthony Ong, psychology professor and director of the Human Health Labs in the College of Human Ecology in New York, shared with Fox News Digital how the “depth and consistency” of social connection across a lifetime “matters profoundly.”
“Strong social ties appear to work in the background over many years, building a more resilient body by reducing the chronic, low-grade inflammation that is a key driver of accelerated aging,” he said.
Staying socially engaged and attached to loved ones is key to healthy aging, experts say. (iStock)
In a previous interview with Fox News Digital, longevity experts David Cravit and Larry Wolf, the Canada-based authors of “The SuperAging Workbook,” shared several aspects of “super-aging,” including attachments to others.
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“I’m lucky enough to have been married to the same wonderful lady for almost 60 years,” Wolf said. “Cultivating contact with people you love, with people you like, and expanding your social network, are all very critical.”
The experts noted that mental and physical exercise are also crucial for keeping the brain young and sharp.
The ‘loneliness epidemic’
Multiple studies have shown that loneliness can be hazardous to humans’ health. In fact, a previous Harvard study found that being lonely is as detrimental as smoking 15 cigarettes per day.
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U.S. Surgeon General Dr. Vivek Murthy released an updated notice on the loneliness epidemic in September, reporting a growing decrease in social connection, especially among young people.
Americans have fewer friends than ever before, especially among younger groups, the surgeon general warns. (iStock)
Psychiatrist Dr. Daniel Amen, founder of Amen Clinics in California, also commented on the grave impact that loneliness may have on human health.
“The number of friends people have has dropped 40% since 1990,” he said in a previous interview with Fox News Digital. “Why? We’re more connected online, but we’re more disconnected in person.”
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“Loneliness increases stress hormones, making you more vulnerable to anxiety and depression, and it’s just bad for you,” he went on.
“When you’re face-to-face with actual people, your brain has to work so much harder, which ultimately is working out your brain.”
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A distraught mother who thought she was having a heart attack was instead hospitalized with broken heart syndrome — otherwise known as takotsubo syndrome (TTS) — less than a year after her veteran son tragically took his own life.
Dawn Turner, 57, of the U.K., lost her son in August of last year.
Just last month, the mom of three awoke with “unbearable” chest pains, she said — and called an ambulance, worried she was going into cardiac arrest. But when she arrived at the hospital, doctors told her she was suffering from the effects of grief caused by a broken heart, as news agency SWNS reported.
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TTS is a temporary, reversible heart condition often triggered by extreme emotional or physical stress, such as grief, fear or severe illness, according to experts.
Symptoms usually mimic a heart attack, with sudden and severe chest pain and shortness of breath the most common — and it primarily affects women over the age of 50.
A mom whose soldier son took his own life feared she was suffering cardiac arrest — only to be told by hospital doctors that she was feeling the effects of grief caused by a broken heart. Dawn Turner, mother of deceased soldier Rob Homans, is pictured above, April 2026. (SWNS)
Turner, of Eckington in Worcester, said, “I was [sitting] downstairs earlier that night and thought I had a bit of indigestion. I went to bed and just couldn’t get comfortable — I was breaking out in a sweat and had heart palpitations.
“Then, around midnight, I had pain down my arm and in my jaw. I was still putting it down to indigestion… My partner Paul asked me if I was all right, and I said, ‘I think I’m having a heart attack.’”
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She said she couldn’t catch her breath — “and my heart felt as though it was missing a beat and then [started] thudding again. For those moments, I truly believed I was having a heart attack.”
“Your heart is all over the place — there’s an extra beat,” Turner was told.
She said her partner called emergency services, and an ambulance arrived within five minutes.
“They came in and linked me up to an ECG. They said, ‘Your heart is all over the place — there’s an extra beat, and it’s all over the place,’” she said, as SWNS reported.
Turner was rushed to the hospital by ambulance.
Turner is shown with her son in full dress uniform. He worked as an artilleryman and spent 10 years in the U.K.’s Royal Horse Artillery after joining in 2006. He was battling mental health challenges after his military service, and ultimately took his own life. (SWNS)
In emergency care, Turner was also given blood tests.
She added, “They came back and said I didn’t have the enzymes produced from a heart attack in my blood. But they said there [was] something going on.”
After undergoing more tests and seeing a cardiologist, Turner was told she had takotsubo syndrome.
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“I told [the doctor] that my heart feels broken. I told her about [my son] Rob, and she said it’s exactly that. She said it’s a real thing, and that I’d been under so much stress. The body can only take so much, and the grief and the stress can be quite physical.”
Turner’s son committed suicide in August 2025 after struggling to get help with his mental health.
He spent 10 years in the Royal Horse Artillery after joining in 2006, when he worked as an artilleryman.
Turner’s son did two tours of duty in Afghanistan, she said. After he returned to civilian life, he began suffering from a number of health conditions. She’s shown above with a flower-draped memorial to her son. (SWNS)
He did two tours of duty in Afghanistan, she said, and returned to civilian life in 2016 before suffering several worsening health conditions.
Turner, who is also the CEO of a veterans charity called Stepway, “When he left the army, he got married, and they settled down in London. He walked straight into a job as a delivery driver. But then his health took a downward spiral, and he started having digestive troubles.”
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He was eventually told he had PTSD — but those symptoms may be similar to those of mild traumatic brain injury, Turner said.
“He was deaf in one ear from using the guns,” she said. “He realized he was putting so much pressure on his marriage, so he moved back up with me. He started to build himself up — then COVID hit.”
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Turner said there were unfortunate delays as her son tried to get access to various services and facilities.
“When people lose loved ones, you’re obviously distraught, but you eventually find closure,” she said, per SWNS. “I found peace when I lost my sister in 2015. But with Rob, I can’t find closure because there’s no justice there.”
“I had never really understood that a person could become so overwhelmed by stress and grief that it physically affects the heart,” said the grieving mom. “Broken heart syndrome can look and feel like a heart attack.” (iStock)
Turner is now on the mend and hopes to be fully recovered in a couple of weeks, SWNS reported.
“Until that moment, I had never really understood that a person could become so overwhelmed by stress and grief that it physically affects the heart,” she shared. “Broken heart syndrome can look and feel like a heart attack. It was a warning sign for me, and for anyone. It can change the shape of one of your heart chambers … it can cause some serious damage.”
She added, “The cardiologist told me that thankfully, my heart itself is healthy and there was no damage, but that it will take around two weeks to a month for my heart to reboot itself.”
“Maybe the extra [heart]beat is for Rob. You are carrying on living for him,” her partner told her.
Turner was told she needed to rest, seek counseling and make lifestyle changes to reduce stress.
“Things have settled down, and I’m taking things easy — I’m pacing myself now, and I feel a lot better. Paul said, ‘Maybe the extra beat is for Rob. You are carrying on living for him.’”
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Turner said, “That broke me and healed me a little bit all at once.”
Fox News Digital previously reported that broken heart syndrome, which causes the heart to temporarily weaken, has been linked to the brain’s reaction to stress, as studies have found.
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In an article published in the European Heart Journal in March 2019, Swiss researchers said they found that the syndrome is linked to the way the brain communicates with the heart.
Broken heart syndrome, which causes the heart to temporarily weaken, has been linked to the brain’s reaction to stress, studies have found. (iStock)
Caused by intense emotional events, TTS is a rare, temporary condition that weakens the left ventricle and disrupts its normal pumping function.
The syndrome causes the heart’s main pumping chamber to change shape and get larger. The heart muscle becomes weaker, and its pumping action loses strength.
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Symptoms include sudden, intense chest pain, pressure or heaviness in the chest, along with shortness of breath.
It is treated with beta blockers and blood-thinning medicine to reduce risks of clots and other flareups.
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Eating too much salt has long been linked to high blood pressure, but new research suggests it could trick the immune system into prematurely aging the blood vessels.
A preclinical study recently published in the Journal of the American Heart Association has identified a biological chain reaction that links a salty diet to cardiovascular decay.
Scientists at the University of South Alabama observed that mice on a high-salt diet experienced rapid deterioration in their blood vessel function.
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After just four weeks of high sodium intake, the small arteries responsible for regulating blood flow lost their ability to relax, according to a press release.
The team found that the cells lining these vessels had entered a state of cellular senescence, a form of premature cellular aging in which cells stop dividing and release a mix of inflammatory signals that can damage surrounding tissue.
Excess salt has long been linked to high blood pressure, but a new study goes deeper into its effects on the cardiovascular system. (iStock)
The researchers tried to replicate this damage by exposing blood vessel cells directly to salt in a laboratory dish, but the cells showed no harmful effects.
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This suggests that salt isn’t directly causing damage to the vascular lining but that the real culprit may be the body’s own defense mechanism, the researchers noted.
Excess salt may trigger the immune system to release a molecule called interleukin-16 (IL-16), which acts as a messenger that instructs blood vessel cells to grow old before their time, according to the study.
Excess salt may trigger the immune system to release a molecule called interleukin-16, which acts as a messenger that instructs blood vessel cells to grow old before their time, according to the study. (iStock)
Once these cells age, they fail to produce nitric oxide, the essential gas that tells arteries to dilate and stay flexible.
To test whether this process could be reversed, the team turned to a class of experimental drugs known as senolytics.
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Using a cancer medication called navitoclax, which selectively clears out aged and dysfunctional cells, the researchers were able to restore nearly normal blood vessel function in the salt-fed mice, the release stated.
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By removing the decaying cells created by the high-salt diet, the drug allowed the remaining healthy tissue to maintain its elasticity and respond correctly to blood flow demands.
Excess salt may trigger the immune system into stopping the cells from dividing, the study suggests. (iStock)
The study did have some limitations. The transition from mouse models to human treatment remains a significant hurdle, the team cautioned.
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Senolytic drugs like navitoclax are still being studied for safety, and the team emphasized that previous trials have shown mixed results regarding their impact on artery plaque.
Additionally, the researchers have not yet confirmed whether the same IL-16 pathway is the primary driver of vascular aging in humans.
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