Knowledge
Evidence-based articles on health, nutrition, and longevity.
7 articles
Dairy is one of the most heavily marketed food groups in history — but what does the science actually say? From lactose intolerance affecting two-thirds of humanity to hormone-laden cheese and the calcium myth, Dr. Greger's research dismantles the most persistent dairy fictions and shows you what to eat instead.
Olive oil is celebrated as a cornerstone of the "healthy" Mediterranean diet, but is the hype justified? Dr. Michael Greger's evidence-based analysis reveals a more nuanced — and surprising — picture: while extra-virgin olive oil edges out refined oils, whole plant foods like nuts and olives remain the far superior choice for your arteries and long-term health.
Your birth certificate tells one story — your biology may tell another. Epigenetic clocks like GrimAge, PhenoAge, and DunedinPace can now measure how fast you are truly aging at the molecular level, offering a far more powerful predictor of disease and longevity than the year you were born. Here is what the science actually shows, and what you can do about it.
The internet is full of health advice — from Instagram influencers, industry-funded studies, and self-proclaimed experts. Here's how to tell science from noise.
The leading causes of death are preventable. Aging is the real risk factor — and your diet directly controls 11 biological mechanisms that determine how fast you age.
Your biological age is not the same as your chronological age. Epigenetic clocks like DunedinPACE and GrimAge v2 measure how fast your body is really aging — and whether your lifestyle interventions are working.
Tessiere et al. (2025) in Nature Medicine followed 105,015 people for 30 years to identify which foods promote — and which accelerate — aging across 6 health dimensions.
