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Longevity.

2 clinician-reviewed articles in this topic.

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Longevity articles

A silver-haired woman jogs along the beach at sunrise with a big smile. Longevity

Biological age testing: what it actually measures

The science is real, the individual precision is modest, and the number differs by provider. What sits under the headline age.

Clinician-reviewed·3 min read
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 Scientific illustration of signalling molecules binding to receptors on a cell surface. Longevity

Biomarker 101: Insulin-like growth factor 1 (IGF-1)

A growth hormone proxy linked to muscle, recovery and ageing research. Why the "optimal" level is genuinely contested.

Clinician-reviewed·3 min read
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