Health
‘Fountain of youth’ molecule could promote healthy aging and slow diseases
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A small molecule has been hailed as potentially promoting longevity and combating certain diseases — but experts are also calling for more research.
NAD+ (Nicotinamide adenine dinucleotide) — often nicknamed the “fountain of youth” — is a coenzyme that is essential for cellular survival, which naturally declines with age. In recent years, supplements designed to boost NAD+ levels have grown in popularity.
Last month, researchers led by the University of Oslo reviewed preclinical and clinical studies investigating the link between NAD+ and aging.
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The review, which was published in the journal Nature Aging, concluded that restoring NAD+ levels could help to promote healthy aging and potentially slow or treat neurodegenerative diseases.
Every cell in the body contains NAD+, which plays a “critical role” in body functions that are essential to survival.
NAD+, a small molecule, has been hailed as potentially promoting longevity and combating certain diseases. (iStock)
Previous research has shown that patients with Alzheimer’s disease exhibit “notably low levels” of NAD+, the researchers noted — which aligns with the fact that NAD+ declines with age.
“NAD+ may hold the key to healthier aging and could protect us against diseases like Alzheimer’s disease and Parkinson’s disease,” said Evandro Fei Fang-Stavem, an associate professor at the University of Oslo, in a press release. “However, we need further research on how to effectively utilize NAD+ in patient treatment.”
Benefits of NAD+
Research has shown that boosting NAD+ can improve mitochondrial and stem cell function, improve energy metabolism, enhance focus and mood, and support tissue repair, according to Dr. Amanda Kahn, a board-certified internist and longevity expert in New York City.
“From a longevity standpoint, NAD+ is one of the most central molecules in maintaining youthful cellular function,” she told Fox News Digital. “It activates … longevity pathways that protect against DNA damage and inflammation.”
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Boosting NAD+ also supports neuroprotection from Alzheimer’s and Parkinson’s, enhances insulin sensitivity, reduces inflammation, repairs skin, boosts immune defense and improves symptoms in long COVID patients, Kahn added.
While NAD+ itself is a large molecule that can’t cross into cells, NAD+ “precursors” can enter cells and then work to create NAD+. (iStock)
Dr. Halland Chen, a double board-certified physician in New York who specializes in longevity, reiterated that studies in both animals and early human models show that maintaining healthy NAD+ levels can improve energy metabolism, cognitive function and overall vitality.
“Restoring NAD+ is ultimately about cellular repair and mitochondrial optimization, not just an energy boost,” he told Fox News Digital. “Clinical experience shows that NAD+ therapy enhances energy, focus and endurance, while supporting detoxification and reducing oxidative stress from daily life, travel or poor sleep.”
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NAD+ also activates sirtuins, a group of longevity-related proteins that regulate DNA repair, cellular stress responses and gene expression, Chen said, although he noted that larger human studies are still needed.
Methods of boosting NAD+
In clinical studies, patients with age-related diseases have taken compounds designed to boost NAD+.
While NAD+ itself is a large molecule that can’t cross into cells, NAD+ “precursors” can enter cells and then work to create NAD+, experts confirm.
These precursors include nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN). Most people take these NAD+ precursors in the form of pills, capsules or powders.
“Clinical experience shows that NAD+ therapy enhances energy, focus and endurance while supporting detoxification.”
“Oral NAD precursors can modestly raise NAD+ levels and are convenient for daily maintenance,” Khan said. “In contrast, injections or IV infusions bypass the gut and deliver NAD+ directly into circulation, leading to more rapid and noticeable effects on energy, focus and recovery.”
Khan also prescribes a weaker NAD+ nasal spray for patients who can’t tolerate needles, though she said the benefits are typically less pronounced.
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“In general, I find that combining daily oral precursors with weekly NAD+ injections offers the most comprehensive support for both intracellular and extracellular NAD stores,” she advised.
Chen noted that oral supplements are best for maintenance, while IV therapy is often chosen for a “rapid cellular reboot, post-travel recovery or enhanced performance.”
“Sessions typically last two to four hours and are administered as a series of three infusions within seven to 10 days, followed by monthly maintenance.”
A doctor noted that oral supplements are best for maintenance, while IV therapy is often chosen for a “rapid cellular reboot, post-travel recovery or enhanced performance.” (iStock)
NAD+ therapy tends to have the most benefit for those managing fatigue, metabolic dysfunction or neurological decline, as well as anyone seeking to enhance energy, focus and recovery, Chen said.
“In healthy adults, benefits are typically modest, but can be amplified when combined with optimized nutrition, exercise and sleep,” he added.
Risks and caveats
While NAD+ therapy is generally safe and well-tolerated, it can cause some mild side effects, according to Chen.
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“Headache, nausea or chest tightness can occur, especially during faster IV infusions, and typically resolve when the rate is slowed,” Chen, who is also chief medical innovation officer at the digital wellness platform Eden, told Fox News Digital.
“Injections or IV infusions bypass the gut and deliver NAD+ directly into circulation, leading to more rapid and noticeable effects on energy, focus and recovery,” a doctor said. (iStock)
“Most reactions are transient and self-limited, and therapy is considered safe under medical supervision,” the doctor added.
He advises caution for people with active liver or kidney disease, those with a personal or family history of cancer, and women who are pregnant or breastfeeding.
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Kahn noted that common side effects include mild redness, itching or tenderness at the injection site, “which is harmless and dissipates quickly.”
“Some patients notice a transient rush, lasting no more than 10 minutes, after taking an NAD+ injection due to a brief release of adrenaline and mitochondrial ATP,” she went on. “While not dangerous, it can feel uncomfortable if not anticipated.”
“If the core pillars — sleep, movement, nutrition, metabolic balance and stress regulation — are not in place, NAD+ therapy won’t deliver its full potential.”
When choosing a NAD+ product, quality matters more than quantity, according to multiple experts.
“Patients should look for clinically validated, third-party-tested formulations and start with lower doses to gauge tolerance,” Chen said.
NAD+ therapy isn’t a shortcut to health and longevity in and of itself, but one layer of a much larger foundation, according to the expert.
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“If the core pillars — sleep, movement, nutrition, metabolic balance and stress regulation — are not in place, NAD+ therapy won’t deliver its full potential,” he said. “It’s like pouring premium fuel into an engine that hasn’t been maintained — the energy source is there, but the system isn’t optimized to use it.”
NAD+ therapy isn’t a shortcut to health and longevity in and of itself, but one layer of a much larger foundation, according to experts. (iStock)
It’s important to speak with a doctor before starting a NAD+ regimen, experts agree.
“Your doctor needs to know about all supplements you plan to take, including NAD+, because it has strong biological effects,” Chen said. “Your doctor will evaluate your personal health risks and check your medications for potential interactions with NAD+ supplements.”
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Khan noted that because NAD+ interacts with metabolic and cellular pathways, dosing and timing should be individualized — “especially for those with cancer history, metabolic conditions or multiple medications.”
“A physician should help determine the appropriate delivery method, duration and monitor for response and tolerance,” she said.
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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)
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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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.
“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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