Topic

Longevity & Ageing

The biology and measurement of ageing: biological age, epigenetic clocks, healthspan, and the interventions studied to slow it.

A semaglutide injection pen resting on a surface

Explainer

Semaglutide slowed measures of biological aging in a small trial

Researchers reanalyzed a 32-week trial of semaglutide in 84 adults and found the drug slowed several DNA-based clocks of biological aging. The aging analysis was exploratory, and the group studied was specific.

Jul 17, 2026