Human study · Nutrition · 27 Oct 2026
Gut bacteria patterns lined up with about 15% of aging-pace differences
Source: ScienceDaily
What the research found
ScienceDaily reported on 27 October 2026 a University of Hawaiʻi at Mānoa study in Scientific Reports. Stool and blood from 123 adults across a wide age range were compared with DunedinPACE, a blood marker of the pace of biological aging. Differences in gut bacterial communities accounted for about 15 percent of the variation in that pace, including after accounting for chronological age. Bifidobacterium adolescentis was among the species most strongly tied to a slower pace, and Succinivibrio dextrinosolvens to a faster one. The sample included Native Hawaiian and Pacific Islander participants. Sex was not reported. The authors say this is an association, not proof that changing gut bacteria slows aging. Not medical advice.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
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