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Are peptides the fountain of youth? Doctors warn hype may outpace science

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Are peptides the fountain of youth? Doctors warn hype may outpace science

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Peptide therapy has gained popularity as a potential health and longevity booster, but experts are warning of cautions and limitations.

Peptides are short chains of amino acids that act as messengers involved in processes like metabolism, growth and immune function, according to Cleveland Clinic.

Some peptides have shown potential in helping with skin health, metabolism, muscle recovery and immunity, although research is limited, experts say.

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“‘Peptides’ is a broad umbrella that includes everything from well-studied, FDA-approved therapies to experimental compounds marketed for anti-aging with limited human data,” Dr. Brad Younggren, a board-certified physician and CEO and co-founder of Circulate Health in Seattle, Washington, told Fox News Digital.

Injectable GLP-1 diabetes and weight-loss drugs are a common form of peptides, he noted.

Peptides are short chains of amino acids that act as messengers involved in processes like metabolism, growth and immune function. (iStock)

“Most people now more widely understand the positive impact this peptide can have on human healthspan,” Younggren said. “Peptides have broad targets across human physiology, and each one must be explored independently.”

Other common types of peptides help with growth hormone production, healing and tissue repair, skin and hair health, immune regulation, and cardiovascular and blood pressure regulation.

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Are peptides the fountain of youth?

Despite some claims of peptides extending lifespan, Younggren cautioned that no longevity therapy or treatment should be considered a “fountain of youth.”

“The science is promising in specific areas, but the category as a whole is not a single, proven longevity solution,” he said. “Peptides may be useful tools in select clinical contexts, but claims of universal rejuvenation are ahead of the evidence.”

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Ben Perez, the biomedical technology specialist at Pure Tested Peptides in Pennsylvania, noted that some people have seen benefits in recovery, immunity and tissue repair, while others have reported positive outcomes related to sleep, lean body mass and recovery time.

However, while peptides show promise, he said some suggested results may be “overly optimistic.”

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Despite some claims of peptides extending lifespan, one expert cautioned that no longevity therapy or treatment should be considered a “fountain of youth.” (iStock)

“Some are anti-aging related and assist with cellular repair, release of growth hormones and metabolic functions,” Perez, who oversees quality control of research peptides, told Fox News Digital. “However, the results can be inconsistent, and the assertions are usually greater than the supportive research.”

Side effects

Each type of peptide can be associated with its own potential side effects, experts say.

Growth hormone–related therapies, particularly those that act on the growth hormone (GH)–IGF-1 axis, can affect multiple hormone pathways and carry risks such as fluid retention, insulin resistance, headaches and joint symptoms, as well as changes in blood pressure or lipid levels, according to Dr. Anant Vinjamoori, M.D., a Harvard-trained physician and chief longevity officer at Superpower.

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“The pathways in the study of peptides are complex and can lead to imbalances in the hormones of the body,” Perez said. “Other negative outcomes can be localized inflammation at the injection site and other reactions.”

“Endocrine disorders, autoimmune disorders and history of cancer are further reasons to be more careful.”

“Selling unproven, miracle-promising or supplement-peddling products with little accountability or third-party testing is a dangerous red flag.”

The most reliable way to receive peptide therapy is through injection, according to Vinjamoori, as some oral forms can be “under-absorbed” or may rely on added ingredients that can cause side effects.

“‘Safe’ is less about the route and more about the molecule, dose, purity and monitoring,” he told Fox News Digital.

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“Most peptides have an extremely strong track safety record based on the data we do have — but there is still much that we do not know.”

Approval and regulation

Some peptides are FDA-approved for specific conditions, including GLP-1s and growth-hormone stimulators. These may be prescribed off-label in some contexts, although risks and benefits vary and evidence may be limited, according to experts.

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There are also some peptides that are not FDA-approved. “Many ‘fitness’ peptides discussed online are in early clinical phases or used only in research settings,” Vinjamoori noted.

“[Peptides] should be approached as a combination of lifestyle measures that contribute to better healthspan,” one expert said. (iStock)

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Perez warned that peptides have little to no regulation in many countries, which means online vendors may sell fake, poor-quality or dangerous products. 

“Selling unproven, miracle-promising or supplement-peddling products with little accountability or third-party testing is a dangerous red flag,” he said.

Starting safely

For those considering peptides, Vinjamoori recommends watching out for the following red flags.

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  • Sourcing issues: Non-pharmacy “research chemicals,” lack of third-party testing or unclear labeling
  • Overblown claims: Promises of rapid muscle gain or fat loss with no training changes
  • Too many compounds: Stacking multiple substances without clear targets or bloodwork
  • Lack of oversight: No clinician, baseline labs, or plan for cycling or stopping

“The most effective longevity care is proactive, personalized, and grounded in biomarkers and scientific evidence,” Younggren added. “It should be approached as a combination of lifestyle measures that contribute to better healthspan.”

Anyone interested in peptides should consult a physician to ensure that they receive a safe product and that it is used appropriately. (iStock)

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Perez emphasized the importance of starting conservatively. “Understand the science, know the source and get medical guidance,” he advised. “Peptide therapy isn’t one-size-fits-all; it’s nuanced and still evolving.”

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While peptides may address issues that fall outside the reach of conventional medicine, Perez said, the supporting clinical data is still being developed.

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“Excessive use can lead to a decrease in their therapeutic effects and may cause adverse reactions, so more is not necessarily better,” he cautioned.

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Anyone interested in peptides should consult with a physician to ensure that they receive a safe product and that it is used appropriately.

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Experts reveal why ‘nonnamaxxing’ trend may improve mental, physical health

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Experts reveal why ‘nonnamaxxing’ trend may improve mental, physical health

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The key to feeling better in a fast, overstimulated world might be surprisingly simple: Live a little more like your grandparents.

A growing social media trend, dubbed “nonnamaxxing,” draws inspiration from the slower, more intentional rhythms associated with an Italian grandmother.

The lifestyle is often linked to activities like preparing home-cooked meals, spending time outdoors and making meaningful connections.

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“Nonnamaxxing is a 2026 trend that embraces the slower, more intentional lifestyle of an Italian grandmother (a Nonna). Think cooking from scratch, long family meals, daily walks, gardening and less screen time,” Erin Palinski-Wade, a New Jersey-based registered dietitian, told Fox News Digital.

Nonnamaxxing, derived from the name for an Italian grandmother, is a trend that incorporates lifestyle habits hundreds of years in the making. (iStock)

Stepping away from screens and toward real-world interaction can have measurable benefits, according to California-based psychotherapist Laurie Singer.

“We know that interacting with others in person, rather than spending time on screens, significantly improves mental health,” she told Fox News Digital, adding that social media often fuels comparison and lowers self-esteem.

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Living more like previous generations isn’t purely driven by nostalgia. Cooking meals from scratch, for example, has been linked to better nutrition and more mindful eating patterns.

Adopting traditional mealtime habits can improve diet quality and support both physical and mental health, especially when meals are shared regularly with others, Palinski-Wade noted.

One longevity expert stresses that staying healthy isn’t just about food — it’s also about joy and community. (iStock)

There’s also a psychological benefit to slowing down and focusing on one task at a time. Anxiety often stems from unfinished or avoided tasks, Singer noted, and engaging in hands-on activities can counteract that.

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“Nonnamaxxing encourages us to be present around a task, like gardening, baking or knitting, or just taking a mindful walk, that delivers something ‘real,’” she said.

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Palinski-Wade cautions against turning the trend into another source of pressure, noting that a traditional “nonna” lifestyle often assumes a different pace of life.

The key, she said, is adapting the mindset, not replicating it perfectly.

Nonnamaxxing, derived from the name for an Italian grandmother, is a trend that incorporates lifestyle habits hundreds of years in the making. (iStock)

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The goal is to reintroduce small, intentional moments that make you feel better.

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That might mean prioritizing a few shared meals each week, taking a walk without your phone or setting aside time for a simple hobby, the expert recommended.

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Singer added, “Having a positive place to escape to, through whatever activities speak to us and make us happy, isn’t generational – it’s human.”

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Loneliness may be silently eroding your memory, new research reveals

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Loneliness may be silently eroding your memory, new research reveals

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Feeling lonely may take a toll on older adults’ memory — but it may not speed up cognitive decline, according to a new study.

Researchers from Colombia, Spain and Sweden analyzed data from more than 10,000 adults ages 65 to 94 across 12 European countries and found those who reported higher levels of loneliness did worse on memory tests at the start of the study, according to research published this month in the journal Aging & Mental Health.

Over a seven-year period, however, memory decline occurred at a similar rate regardless of how lonely participants felt.

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“The finding that loneliness significantly impacted memory, but not the speed of decline in memory over time was a surprising outcome,” lead author Dr. Luis Carlos Venegas-Sanabria of the School of Medicine and Health Sciences at the Universidad del Rosario said in a statement.

Loneliness may be linked to memory performance in older adults, a new study suggests. (iStock)

“It suggests that loneliness may play a more prominent role in the initial state of memory than in its progressive decline,” Venegas-Sanabria said, adding that the findings highlight the importance of addressing loneliness as a factor in cognitive performance.

The findings add to debate about whether loneliness contributes to dementia risk. While loneliness and social isolation are often considered risk factors for cognitive decline, research results have been mixed.

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The study looked at data from the long-running Survey of Health, Ageing and Retirement in Europe (SHARE), which tracked 10,217 older adults between 2012 and 2019. Participants were asked to recall words immediately and after a delay to measure memory performance.

Social isolation and loneliness could play a surprising role in cognitive health among seniors. (iStock)

Loneliness was assessed using three questions about how often participants felt isolated, left out or lacking companionship.

About 8% of participants reported high levels of loneliness at the outset. That group tended to be older, more likely to be female and more likely to have conditions such as depression.

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Researchers found that those with higher loneliness had lower scores on both immediate and delayed memory tests at baseline. Still, all groups — regardless of loneliness level — experienced similar declines in memory over time.

The results suggest loneliness may not directly accelerate the progression of memory loss, though it remains linked to poorer cognitive performance overall.

Researchers look at a brain scan at the National Institutes of Health in Bethesda, Maryland. (Saul Loeb/AFP/Getty Images)

Experts warn, however, that the findings should not be interpreted to mean loneliness is harmless.

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“The finding that lonely older adults start with worse memory but don’t decline faster is actually the most interesting part of the paper, and I think it’s easy to misread,” said Jordan Weiss, Ph.D., a scientific advisor and aging expert at Assisted Living Magazine and a professor at NYU Grossman School of Medicine.

“It likely means loneliness does its damage earlier in life, well before people show up in a study like this at 65-plus,” Weiss told Fox News Digital.

By older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold, an aging expert says. (iStock)

He suggested that by older age, long-term social patterns may already be established, making it harder to detect when the effects of loneliness first took hold.

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“By the time you’re measuring someone in their late 60s, decades of social connection patterns are already baked in,” he said.

Weiss, who was not involved in the research, added that loneliness may coincide with other health conditions, and noted that participants who felt more isolated also had higher rates of depression, high-blood pressure and diabetes. The link, he said, may reflect a cluster of health risks rather than a direct cause.

“While they can go hand-in-hand, it’s not clear that loneliness contributes to dementia,” a psychotherapist says. (iStock)

Amy Morin, a Florida-based psychotherapist and author, said the findings reflect a broader pattern in research on loneliness and brain health, and that the relationship may be more complex than it appears.

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“The evidence shows there’s a link between loneliness and cognitive decline but there’s no direct evidence of a cause and effect relationship,” she said. “So while they can go hand-in-hand, it’s not clear that loneliness contributes to dementia.”

Morin added that loneliness, which can fluctuate, may not be the root of the problem, but rather a symptom of other underlying mental or physical health issues.

Researchers suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging. (iStock)

She said staying socially and mentally engaged is crucial for overall brain health.

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“It’s important to be proactive about social activities,” Morin said. “Joining a book club, having coffee with a friend, or attending faith-based services can be a powerful way to maintain connections in older age.”

The researchers also suggested screening for loneliness be incorporated into routine cognitive assessments as one way to support healthy aging.

Fox News Digital reached out to the researchers for comment.

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Eat More To Lose Weight? She Dropped 55 Pounds by Having 5 Meals a Day

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Eat More To Lose Weight? She Dropped 55 Pounds by Having 5 Meals a Day


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Eat More To Lose Weight? How Small Meals Boost Fat Burn




















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