Measurement
Biomarkers
What can we measure about health and aging — and what does the measurement actually tell us? We separate established clinical measurements from risk markers, emerging tests and research-stage aging biomarkers.
Measurable does not necessarily mean meaningful.
A biomarker can predict risk without being causal, and a test can change after an intervention without proving that health or lifespan improved. Each page separates measurement, association, interpretation and limitations.
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This catalog explains evidence and measurement; it does not diagnose disease or define a personal treatment target.