Section

Longevity

Coverage of the biology, interventions, and emerging evidence behind extending healthspan and slowing biological aging.
Three Quiet Signals of How You're Actually Aging
Longevity

Three Quiet Signals of How You're Actually Aging

New 2025 population research points to surprisingly accessible markers — what's in your urine, the length of your reproductive years, and a single honest question about your health — that track biological age.