· 14 min read · 24 sources
Sauna: what the research actually says
The famous Finnish numbers compare sauna users against sauna users, not against people who never go. Everything we found, including the null result.
Read articleAnalyses
Readings of the published evidence around one question, every claim tied to a PMID. They are not built as systematic reviews, and so they do not claim to be.
· 9 min read · 64 sources
Red and near-infrared light: a 2,225-study search
Red and near-infrared light across skin, pain, cognition, mood and eye safety, with a transparent count of how many studies were actually verified.
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· 8 min read · 4 sources
Biological age: the real formula, not the questionnaire
Calculate your biological age free from your own blood work, using the published formula. What it means, how to measure it, and what actually lowers it.
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· 6 min read · 7 sources
What is longevity? Meaning, causes and what helps
The word gets used for two different things. Lifespan is how long you live; longevity, as this field uses it, is how many of those years you are well. What determines it, and what is actually proven.
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· 2 min read · 3 sources
Why third-party testing matters
Independent lab testing is the only practical way to check a supplement contains what its label claims. Published analyses keep finding ones that do not.
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· 6 min read · 4 sources
Grip strength and longevity: what 1.5 million people show
Grip strength predicts death better than blood pressure does. A real finding from huge cohorts, and widely misread. What it measures and what it does not.
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