Scientists found certain gut bacteria strongly linked to biological aging speed. Microbial differences account for about 15% of variation in aging rates, with some species tied to slower aging and others to faster decline.
Quantifying the microbiome's share of aging variation gives a concrete target for interventions. If specific bacteria drive slower aging, future therapies could adjust gut composition to extend healthy lifespan, moving beyond correlation to causal leverage.
✦ Your gut bugs may help set your aging clock.