Health
Fasting-like diet could slow the aging process, study suggests: ‘Living longer and healthier’
Could adopting a fasting-like diet help slow down aging?
That’s the claim of researchers from the USC Leonard Davis School of Gerontology in Los Angeles, who led a study on the benefits of a “fasting-mimicking diet” (FMD).
In addition to reducing biological age and immune system aging, the diet was linked to reductions in insulin resistance and liver fat, according to a press release from the university.
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The findings, published in Nature Communications on Feb. 20, were based on clinical trials that included 100 men and women between 18 and 70 years old.
Half of the group was randomly assigned to the FMD, adhering to the diet for five days followed by 25 days of normal eating for three or four cycles.
A fasting-mimicking diet was found to reduce biological age and immune system aging, as well as insulin resistance and liver fat, in a new study. (iStock)
The control group ate either a normal diet or a Mediterranean-style diet.
The people in the FMD group showed decreased abdominal and liver fat, as well as reduced risk of metabolic syndrome, which can lead to heart disease, stroke and diabetes.
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Those on the experimental diet also showed signs of a more youthful immune system.
Overall, the FMD adopters’ biological age was reduced by an average of 2.5 years based on the functioning of their cells and tissues, the researchers found.
In the USC study, the fasting-mimicking diet included energy bars, plant-based soups, chip snacks, energy drinks and tea. (iStock)
“I think it is surprising that three cycles of the FMD done for only five days a month (15 days total) — which allow people to have modified/low calorie but regular meals and without changing the normal diet of the participants for the rest of the month — can have such an effect on biological age, body fat and a range of disease risk factors,” senior author Valter Longo, USC Leonard Davis School Professor, told Fox News Digital.
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If the cycles were continued for three cycles a year for 20 years, Longo projected that the FMD could reduce biological age by 11 years and reduce the risk of cancer, cardiovascular disease and diabetes by 10% to 30%.
“However, these are only simulations — and additional studies are necessary to confirm this potential of the FMD cycles,” he added.
Half of the group was randomly assigned to the FMD, adhering to the diet for five days followed by 25 days of normal eating for three or four cycles. (iStock)
Prior studies in mice have identified additional benefits of the FMD, including reduced risk of age-related diseases like cancer, heart disease and diabetes, Vongo pointed out.
The diet has been previously to reduced chemo side effects, greater stem cell regeneration and reduced signs of dementia, the release stated.
What is the fasting-mimicking diet?
Originally developed by Longo, the FMD is a five-day diet that is low in overall calories, protein and carbohydrates and high in unsaturated fat.
The eating plan is designed to mimic a pure fast while still allowing consumption of essential nutrients.
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“The fasting-mimicking diet (FMD), also known as the ProLon Diet, has been around for approximately seven years and has been studied in multiple clinical trials,” Erin Palinski-Wade, a New Jersey-based registered dietitian, told Fox News Digital.
“By following a structured, very low-calorie nutrition plan for five days, the goal is to provide the benefits of a prolonged fast while still allowing individuals to eat,” said Palinski-Wade, who was not involved in the USC study.
“The diet is designed to transition the body into a fasting state while nourishing it with specific nutrients to avoid activating food-sensing pathways.”
“[The diet] allows for physical, biological and epigenetic benefits without the need for prolonged water-only fasts,” an expert said. (iStock)
In the USC study, the fasting-mimicking diet included energy bars, plant-based soups, chip snacks, energy drinks and tea, according to the release.
The FMD group also received a supplement with “high levels of minerals, vitamins and essential fatty acids.”
The specific diet that was tested in the two trials is commercially available, but Longo said that university rules prevent him from sharing the name of the product.
“In an era obsessed with superficial youth and quick fixes, the fasting-mimicking diet offers a tangible method to systematically reverse aging and enhance metabolic health.”
“I think it is important to begin to consider the plant-based FMD intervention described here for two to three times a year as a way to prevent and treat some diseases, together with the right type of drugs,” Longo said.
This could aid in “returning to full health and living longer and healthier, rather than continuing to take progressively more drugs as we age,” he added.
For people aiming to prevent or treat diseases through the use of an FMD, Longo said people should first talk to a doctor.
Other experts weigh in on the diet
Melanie Avalon, an Atlanta-based health influencer who hosts “The Intermittent Fasting Podcast,” was not involved in the study, but noted that the research provides “solid data” on how dietary and lifestyle changes affect the aging process.
“Our society’s fascination with youth and longevity is well-known; however, measuring progress and biological improvements is often subjective,” she told Fox News Digital.
While fasting is often pursued for its visible weight loss benefits, an expert noted that this study highlights its extended benefits for metabolic health. (iStock)
“The concept of ‘chronological age’ can mislead when assessing the body’s aging rate and predicting lifespan,” Avalon went on.
“For the first time, this study reveals that a fasting-mimicking diet can reduce one’s biological age.”
While traditional fasting can be daunting for some, FMD can be a more feasible alternative.
“It allows for physical, biological and epigenetic benefits without the need for prolonged water-only fasts,” she said.
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While fasting is often pursued for its visible weight loss benefits, Avalon noted that this study highlights FMD’s extended benefits for metabolic health.
“In an era obsessed with superficial youth and quick fixes, the fasting-mimicking diet offers a tangible method to systematically reverse aging and enhance metabolic health,” she said.
“Unlike the costly and extreme measures of ‘biohacking,’ the FMD provides an accessible and practical solution to reduce biological age.”
Potential risks and limitations
Tanya Freirich, a registered dietitian nutritionist in Charlotte, North Carolina, who practices as The Lupus Dietitian, cautioned that she would not recommend the fasting-mimicking diet to any person who has struggled with an eating disorder in the past or who has trouble controlling their blood sugar.
“Restricting and changing eating patterns may have negative effects,” she said.
The fasting-mimicking diet could aid in “returning to full health and living longer and healthier, rather than continuing to take progressively more drugs as we age,” the study author said. (iStock)
Palinski-Wade agreed that those with underlying health conditions should speak to their physician before considering a restrictive diet plan.
“A very low-calorie diet may not be appropriate for those with uncontrolled diabetes, a history of hypoglycemia, a history of disordered eating, or those who are pregnant or nursing,” she said.
Before making any dietary changes, Freirich stressed the need for “extensive education” to be provided.
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“While changing the timing and amount of our food intake is an approach worth examining, it is also important to remember to choose health-promoting foods daily,” the dietitian continued.
“The food choices we make daily have a large impact on our weight, blood sugars, heart health, immune system and more. If fasting doesn’t feel like the right choice for you, speaking with a registered dietitian about the dietary changes for your health is always recommended.”
Before making any dietary changes, a nutritionist (not pictured) told Fox News Digital that people need “extensive education” to be provided. (iStock)
The study had some limitations, both dietitians noted.
“It was a small sample size of healthy young-ish individuals,” Freirich said. “The results may be helpful and useful for other people after more research is completed in a larger age range and including people with other medical concerns.”
Palinski-Wade reiterated that the studies on FMD have included smaller sample sizes of generally healthy adults, which means the results cannot be generalized to all populations.
“FMD may offer promising benefits and may be an excellent tool to consider for those looking to improve long-term health and reduce future disease risk, but more research is needed on larger and more diverse populations to fully understand the benefits it may offer,” she added.
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Dr. Megan Jack, a neurosurgeon in Cleveland, often works 60 or 70 hours a week. And she’s completely unavailable when she’s in the operating room. That makes it tough to be a caregiver for her 76-year-old mother, who lives in a separate unit on Dr. Jack’s property, 30 minutes away from the hospital.
To help care for her mother, who has Alzheimer’s disease, Dr. Jack uses an array of high-tech tools, some of which didn’t exist just a few years ago. She manages her mother’s medications with a smart pill box. She changes her television channels with an app, sends appointment reminders through a digital message board — and, with her mother’s blessing, uses cameras for communication and monitoring.
“It’s been invaluable that I can both make sure she’s safe and make sure everything is going well,” Dr. Jack said, “but also give her the independence and the freedom that she still deserves.”
America is aging rapidly. Roughly 11,000 people are turning 65 each day in the United States. And many of them — 75 percent of people over 50, according to AARP’s most recent survey, from 2024 — hope to spend their remaining years in the comfort of their homes, rather than in assisted-living or other care facilities.
One thing that could help fulfill those wishes is the budding field of “age tech,” which encompasses tools that support older adults. Industry experts say that age tech is making homes safer for older adults and is easing the minds of their caregivers, especially those who live far away or work outside the home.
Dr. Jack said that age tech had “really allowed me to integrate caregiving into my life, as opposed to caregiving taking over my life.”
The age tech boom
If older adults don’t have loved ones who are both close by and able to help, they might believe they don’t have a ton of options. They can live independently, or, if they can afford it and qualify medically, they can move to an assisted-living facility or a nursing home, without a lot of choices in between. In-home help can be expensive without Medicaid and can also be difficult to find, given the serious shortage of home care workers.
Age tech can help bridge some important gaps, said Emily Nabors, the associate director of innovation at the National Council on Aging, a nonprofit advocacy group. Already, AARP reports that 25 percent of caregivers are remotely monitoring their loved ones with apps, videos or wearables, nearly double the percentage from five years ago.
“We used to say homes are the health care settings of the future, but they really are health care settings now,” Ms. Nabors said. “Aging in place is very realistic.”
More than 700 companies are in AARP’s AgeTech Collaborative, a group that connects businesses, nonprofits and funders to help get new technologies off the ground. Altogether, the collaborative’s start-ups have raised nearly $1 billion in the past four years.
The products include smart walkers, glasses with lenses that provide real-time captions of conversations for those with hearing issues, and a concierge service that connects older people to drivers and deliveries, even if they don’t have a smartphone.
Ms. Nabors does foresee some affordability and access barriers to age tech, including the lack of high-speed internet in rural areas, but she said one vital resource would be local aging agencies, which can offer advice and, sometimes, free support.
Janet Marasa leaned on the agency near her home in Rockland County, N.Y., to get a free robotic pet for her mother, Carol DeMaio, 80, who has dementia. The pets, manufactured by a company called Joy for All, aim to offer emotional support without the upkeep.
Ms. DeMaio named the robotic dog Sabrina, after a golden retriever who died. The new Sabrina stays at the foot of her bed at night. As soon as Ms. DeMaio stirs awake, the dog reacts. “She said it gives her a reason to get up in the morning,” Ms. Marasa said.
The dog has been a boon to her, too. “It provides comfort and interaction that I can’t provide every second,” said Ms. Marasa, who lives with her mother but works full time for the county government. “It gives her something that she can feel like is totally her own.”
In Broward County, Fla., where the population of residents over 85 is expected to nearly triple over the next few decades, the local agency on aging has used state and federal money and private grants to provide technologies to nearly 4,000 of the county’s seniors at no cost.
Its offerings include a company that uses radar to sense falls and a program that allows seniors to make video calls through their televisions.
“The possibilities are endless,” Charlotte Mather-Taylor, the agency’s chief executive, said. “It’s pretty great to see all the new technology coming out so quickly, and I think that can only benefit our older population and also our caregivers.”
Here comes A.I.
Even technologies not specifically marketed as age tech can help older adults maintain their independence, said Laurie Orlov, founder of the blog Aging and Health Technology Watch. She pointed to video-calling and telehealth platforms; remotely controlled thermostats and lights; and smart speakers, doorbells and watches.
“All technology can be customized to help older adults stay longer in their homes and help their family members feel good about it, or at least tolerate it,” Ms. Orlov said.
That will only become more true with the continued proliferation of artificial intelligence, Ms. Orlov added. Some older adults are already using conversational A.I. to get answers about things like the weather or their medications. (Relying too heavily on A.I. can, however, have negative consequences because chatbots often give flawed medical advice and can lead patients astray.) A.I. can also assist in pattern detection: alerting caregivers to signals that might indicate declines in someone’s cognition or mental health, such as changing their speech pattern or leaving the house less frequently.
One A.I.-powered age tech tool is ElliQ, a tabletop companion robot that looks like a sleek silver desk lamp with a screen. About a year and a half ago, Camille Wolsonovich got one for free, thanks to a local nonprofit, for her 90-year-old father, Bill Castellano. He lives alone in a senior community.
Ms. Wolsonovich, who runs a consulting business, relies on ElliQ to lead her father in exercises and remind him to take his pills and drink water. The robot also asks her father about his sleep and mood via automated check-ins.
“Everything’s just another layer that gives us more confidence, from a caregiving standpoint, that he’s good,” Ms. Wolsonovich said. “I don’t have to necessarily track everything all the time and be overbearing.”
As for Mr. Castellano? He plays trivia digitally and converses daily with ElliQ. The robot, which has a friendly female voice, asks questions, cracks jokes and remembers his likes, dislikes and friends. “She’s great company,” he said. “Everybody around me wants one.”
What about ethical concerns?
Clara Berridge studies the ethics of age tech at the University of Washington.
She has many privacy concerns, namely that most direct-to-consumer products aren’t subject to medical privacy laws, despite being privy to sensitive health information. Though she hopes the federal government will eventually step in to regulate these products, as it has in other countries, the onus remains on the consumer for now.
And even if an age tech product isn’t selling mom’s personal data to the lowest bidder, Dr. Berridge said there’s still the question of whether certain tools are ethical.
“It’s really important for caregivers to recognize that using these new technologies that give them more information about someone can represent greater intrusion into someone’s life,” she said.
What may be well-intentioned monitoring could reveal information that an older adult would rather keep private, such as issues with incontinence, or the comings and goings of a romantic partner.
“It can lead to somebody feeling infantilized,” Dr. Berridge said. “Like there’s not a place to hide within your own home.”
Her research shows that adult children often underestimate how much their parents can understand about technology and how much they want to be involved in tech-related decisions.
She encouraged caregivers to have transparent conversations about privacy implications and to avoid ultimatums or the idea that any decision must be permanent. She said caregivers should put themselves in their parents’ shoes: Is this something they’d want their own children monitoring?
Dr. Berridge is working on an advanced directive for technology, which outlines older people’s wishes for how technology is used in their care. Ultimately, she hopes that questions about age tech will become a standard part of planning for the future.
“If you’re at the start of what, for many people, ends up being a long road of supporting someone potentially through the end of their life,” she said, “seeking to understand each other’s concerns and priorities better is time very well spent.”
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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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