77 studies
Research Library
Peer-reviewed papers from top journals, summarized and graded by evidence strength. Updated Mon, Wed & Fri.
May 10–16, 2026
5Blood NAD+ Levels Stay Flat With Age, Challenging Popular Aging Theory
One of the most repeated ideas in longevity is that NAD+ declines as we age, a story that helped make NR and NMN household names in the space. This large, carefully controlled study takes a closer look. Across seven independent cohorts and more than 300 people, researchers found that whole-blood NAD+ levels stayed remarkably stable with age, and didn't shift meaningfully in response to exercise, protein-rich diets, or multimodal lifestyle interventions in older adults. Importantly, NR supplementation did raise blood NAD+ as expected, confirming that the supplements work pharmacologically, the question is just whether blood NAD+ is the right thing to be measuring in the first place.
Exercise May Ease Anxiety, Especially Mind-Body and Aerobic Workouts
Looking at 10 studies of about 2,400 adults with generalized anxiety, researchers found exercise was linked to lower anxiety symptoms. Mind-body workouts like yoga and aerobic exercise showed the biggest effects, while resistance training results were unclear. Programs lasting 8 weeks or more with sessions of 21 to 40 minutes seemed most helpful. However, the studies varied widely, so the authors caution this is suggestive, not definitive.
Diabetes Drug Acarbose May Calm Severe Allergies By Reshaping Gut Bacteria
In mice, the diabetes drug acarbose changed how gut bacteria use carbs, boosting a microbe that produces succinate. That succinate then blocked the mast cell reactions behind severe allergic shock. A look at human records found people taking similar drugs had fewer anaphylaxis cases.
Just 5,700 Daily Steps Cut Death Risk By 13% In Older Adults
Looking at dozens of studies with over 367,000 older adults, regular walking was tied to lower risk of death, disease, and cognitive decline. Each extra 1,000 daily steps was linked to a 13% drop in death from any cause. Walking pace did not change the benefit, so slow walks counted too.
Losing Your Sense Of Smell May Signal Faster Muscle Decline With Age
In adults aged 71 to 82, those who had lost their sense of smell lost grip strength faster over seven years. Men with anosmia also lost more quadriceps strength, though women did not show the same leg muscle effect. The link suggests smell loss may be an early warning sign of neuromuscular aging.
May 3–9, 2026
7Long-Lived Genes May Give Grandkids a Healthier Start in Life
Grandchildren of Danish families known for exceptional longevity had about half the risk of dying in infancy compared to the general population. They also showed better health markers at birth. But by the great-grandchildren generation, this advantage faded considerably, hinting that the protective effect dilutes over time.
New Aging Clocks Reveal Blood Clotting Factors May Drive Organ Decline
Researchers built a multi-layered aging clock using clinical, physiological, and molecular data from over 2,000 Chinese adults. They found that plasma proteins can predict both your age and how well your body is holding up. The standout discovery: clotting factors pile up with age and may fuel organ-wide aging and inflammation.
Spermidine May Protect the Liver by Reshaping Cell Communication
Spermidine, a compound found in foods like wheat germ and aged cheese, may help slow liver scarring. In mice and lab studies, it changed how key liver cells talk to each other, reducing fibrosis. Human dietary data also linked higher spermidine intake to lower fibrosis risk.
Senolytics Plus TB Drugs Boost Survival in Infected Mice
Tuberculosis triggers some lung cells to become senescent (zombie-like cells that won't die but cause damage). Researchers gave infected mice a senolytic cocktail of dasatinib, quercetin, and fisetin alongside standard TB treatment. The combo improved survival and reduced lung damage, especially in older mice.
Exercise Linked to Younger Biological Age, But Effect Is Modest
Pulling together 44 studies on nearly 145,000 people, researchers found that more physical activity is tied to a younger biological age, but only on certain epigenetic clocks. The effect showed up clearly on GrimAge and Horvath clocks, but not on Hannum or PhenoAge. The size of the benefit was small, and most data came from snapshot studies, so we can't say exercise actually causes the slowdown yet.
Mediterranean and MIND Diets Linked to Lower Dementia Risk in Korean Adults
In a 20-year study of over 5,000 Korean adults, those who stuck closest to the Mediterranean, MIND, or Korean Healthy Eating diets had about 20% lower odds of developing high dementia risk scores. Meanwhile, people eating the most inflammatory foods saw their risk climb. The takeaway lines up with what we already suspect about brain-friendly eating, but it's the first solid evidence in a Korean population.
Why Alzheimer's May Look Like a Viral Infection That Isn't There
This review proposes that Alzheimer's behaves like the brain fighting a fake viral infection. Old retrotransposons and leaked mitochondrial DNA trick immune cells into thinking there's a virus, triggering chronic inflammation and turning brain support cells into zombie-like senescent cells. The authors suggest that HIV drugs (NRTIs) and senolytics could one day target this hidden cascade. It's a fresh angle after years of failed amyloid-focused drugs.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.
Your Weekly Edge
Receive the latest longevity insights, exclusive event invites, and science-backed tips to help you live longer and thrive.
