Longevity & AgingDogs and Humans Share the Same Blood Metabolite Signatures of Death Risk
Researchers from the Dog Aging Project analyzed plasma metabolomes of 937 companion dogs and found that 23 metabolites significantly predicted all-cause mortality. Strikingly, the direction and magnitude of these mortality-associated metabolites correlated strongly with findings from nine independent human cohort studies, with Pearson's r ranging from 0.46 to 0.74. Critically, dogs identified these biomarkers in just 2.6 years of follow-up versus up to 22.5 years in human studies. Metabolites like pseudouridine, homocitrulline, and N2,N2-dimethylguanosine were elevated in those who died, while deoxycarnitine and homoarginine were depleted — patterns linked to renal function in both species. The findings establish companion dogs as a fast, translationally powerful model for human aging research.
