Science
Articles on longevity, NAD+, geroscience, nutrition, exercise, sleep, and biotechnology, with evidence level and sources.
Established Level B · moderate human evidence
Lifespan and healthspan are not the same question
Lifespan is how long a life lasts. Healthspan is how long it is lived with autonomy. Contemporary geroscience is more interested in the second.
2026-10-05
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