What Is the Downside of Red Light Therapy?
What is the downside of red light therapy? For most healthy adults who use a well made device exactly as directed, the downside is small: mild and temporary skin redness, eye strain if you skip eye protection, and a real chance of paying a lot of money for a modest or uncertain benefit. The bigger […]
Does SRSF1 Reverse Ageing? One Gene, Real Cells, Zero Human Proof
Does SRSF1 reverse ageing? In old human cells in a dish and in aged mice, boosting this one gene shifted cells toward a younger state and extended median lifespan by 14%. In people, it has not been tested at all. That gap, between a striking laboratory result and any human evidence, is the whole story […]
Does Urolithin A Actually Do Anything for Muscle?
Does urolithin A work? If you have seen the $99 strawberry gummies promising to change how your cells age, that is the question to ask before you subscribe. Urolithin A is a postbiotic compound your gut can make from pomegranate, berries and walnuts, and the supplement industry’s pitch rests on one striking number: a randomised […]
Do GLP-1 Drugs Really Reverse Biological Ageing?
Do GLP-1 drugs slow ageing? If you take a GLP-1 drug like semaglutide or tirzepatide, are you getting younger on the inside? At the 2026 Aging Research and Drug Discovery (ARDD) meeting, Novo Nordisk and Eli Lilly stood up and said something close to that: patients on their blockbuster weight-loss drugs came out roughly two […]
Can You Train Processing Speed, the Brain Skill Tied to Longer Life?
Short answer: Yes, probably. In a study of 4,561 Australian adults followed for a median of 11.3 years, each standard-deviation increase in processing speed was linked to 32% lower mortality (hazard ratio 0.68), after adjusting for education, lifestyle and health factors. And in the ACTIVE trial of about 2,800 older adults, ten hours of adaptive […]
How Often Should You Cold Plunge? The Protocol That Makes Sense
Short answer: No randomised trial has ever established an optimal weekly cold plunge frequency. The best-supported approach from the current evidence is 2 to 4 sessions per week, totalling roughly 11 minutes of immersion at 10 to 15°C, with the dose of each session mattering far more than how often you get in. If you […]
What 6 Habits Are Aging You Faster? (And What to Do Instead)
What 6 Habits Are Aging You Faster? What 6 habits are aging you faster? Smoking, sitting all day, sleeping under 6 hours, drinking heavily, living on ultra-processed food and chronic loneliness. Researchers can now estimate how fast your body is aging by reading chemical marks on your DNA, known as epigenetic clocks, and all six […]
What Are the Top 3 Supplements for Longevity? What Research Actually Supports
The short answer What are the top 3 supplements for longevity? Ranked strictly by human evidence on ageing-relevant outcomes, they are: omega-3 fatty acids (1 g a day, the only supplement with trial evidence of slowed biological ageing), vitamin D3 (2,000 IU a day, strongest as part of a three-part stack that cut invasive cancer […]
What Increases Lifespan the Most? Ranked by the Evidence.
Ask ten longevity enthusiasts what increases lifespan the most and you will get ten different answers: metformin, rapamycin, cold plunges, NAD boosters, fasting. The published evidence gives a much less exciting, much more useful answer. The single biggest lever ever measured in humans is quitting smoking, worth about a decade of life. Stack five ordinary […]
Can You Gain Muscle From Creatine Without Exercise? What the 12-Week Trial Found
Creatine without exercise sounds like a contradiction. For decades the default advice has been that creatine only pays off when paired with hard training. A new 12-week trial from Texas A&M University, published in the Journal of the International Society of Sports Nutrition in 2026, tested that assumption directly: sedentary but healthy adults aged 45 […]