Dog Aging Project Finds Shared Mortality Biomarkers in Dogs and Humans
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- Dog Aging Project researchers analyzed blood metabolites from pet dogs and identified combinations associated with earlier or later death that closely mirrored patterns found in five large human mortality studies.
- Dr. Kate Creevy, chief veterinary officer for the Dog Aging Project and professor at Texas A&M College of Veterinary Medicine, said the molecules linked to risk or protection in dogs are 'very similar to those in people,' suggesting shared features of aging biology.
- The Journals of Gerontology published the study, which examined thousands of small molecules together as a metabolic 'fingerprint' rather than isolating individual markers, since group patterns reveal more about what's happening inside cells.
- Pet dogs offer distinct research advantages: their widely varied lifestyles mirror those of their owners more than cats do, and their 12–13 year lifespans let scientists observe aging outcomes decades faster than human studies allow.
- The Dog Aging Project is a nationwide community science effort where owners contribute detailed survey data and, in some cases, yearly biological samples, enabling long-term tracking of health changes.
- Creevy cautioned that biomarkers linked to mortality aren't necessarily causal, but identifying them gives researchers specific biological signals to investigate further, potentially allowing findings from human research to be applied to canine health and vice versa.
Why it matters: Because dogs age 5–6 times faster than humans and share owners' environments and diets, shared metabolic biomarkers could let researchers run lifespan studies in years rather than decades, and let findings from human aging research flow back into veterinary care for the millions of pet dogs enrolled in the project.
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