Centenarians Show Unique Blood Metabolite Pattern
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- Boston University Chobanian & Avedisian School of Medicine identified a distinct pattern of blood metabolites in centenarians, including unusually high levels of primary and secondary bile acids and preserved levels of several steroids, that differed from patterns seen in typical aging.
- The New England Centenarian Study team analyzed blood samples from 213 participants — 70 centenarians, their offspring, and age-matched controls — using an untargeted metabolomics assay that measured approximately 1,495 small molecules in blood serum.
- Researchers validated their findings by comparing results against four additional metabolomics studies and developed a machine-learning "metabolomic clock" that estimated biological age from metabolite levels, evaluating whether being biologically younger than chronological age predicted survival.
- The metabolic patterns identified were associated with a lower risk of death after blood samples were collected, according to the survival analysis.
- Corresponding author Stefano Monti stated the chemical fingerprints could help identify biological pathways that protect against age-related decline, while flagging that the cross-sectional design means cause and effect cannot yet be determined.
- The researchers highlighted bile acid pathways, NAD-related pathways, gut bacterial metabolites, oxidative stress markers, and certain steroids as deserving additional study as possible therapy or dietary targets.
- The findings were published online in the journal GeroScience (DOI: 10.1007/s11357-026-02174-2).
Why it matters: The study offers the first metabolomic map of exceptional longevity drawn from 70 centenarians, with 1,495 molecules measured and survival associations calculated — giving drug developers and clinicians concrete biological pathways (bile acids, NAD, gut metabolites) to target for age-related decline interventions, though the authors explicitly say causation is not yet established.
