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    Semaglutide extended lifespan 12% in old female mice

    A Nature paper published Sep 2 found late-life semaglutide raised median lifespan about 12% in 20-month-old female C57BL/6 mice, from 742 days to 834 days. David Sinclair posted the paper; he is not an author. This is mice only. A human aging indication is unproved.

    Medicine2 sourcesSep 3, 2026