Dogs and humans may have more in common when it comes to aging than previously thought.
Research from the Dog Aging Project found similar biological patterns linked to lifespan in both species.
Researchers examined blood samples from dogs enrolled in the Dog Aging Project.
They looked at thousands of metabolites, which are chemicals produced as the body carries out normal functions.
Certain combinations of these molecules were linked with whether dogs died earlier or later in life.
Instead of concentrating on one molecule at a time, researchers looked for larger metabolic patterns. These patterns may provide clues about what is happening inside cells as animals age.
A Metabolic Fingerprint of Aging
The researchers describe these patterns as a kind of biological “fingerprint.”
The associated biomarkers can indicate that certain processes are connected with better or worse health outcomes.
However, researchers emphasize that a biomarker linked to earlier death does not necessarily cause it. Understanding why the biomarker appears could eventually help scientists identify what is actually driving the relationship.
Dogs and Humans Age in Similar Ways
The team compared the dog findings with five major human studies involving mortality and metabolites.
The results showed broadly similar metabolic signals in dogs and people. That suggests the two species may share important biological features involved in aging.
Because researchers already know more about some of these processes in humans, that knowledge could potentially be used to improve the health of aging dogs as well.
Why Dogs Help Scientists Study Aging
Dogs are especially useful for aging research because their lives often resemble those of their owners.
They share similar environments, diets and activity patterns, giving researchers a chance to study how lifestyle affects long-term health.
Dogs also age much faster than people. With typical lifespans of about 12 to 13 years, researchers can observe aging and mortality over a much shorter period than in human studies.
The Dog Aging Project
The research comes from the nationwide Dog Aging Project, which follows dogs throughout their lives.
Participating owners provide information about their dogs, while some also provide biological samples. This allows researchers to track changes in health and aging over time.
The researchers consider these findings an early step toward understanding the biological mechanisms behind aging. The metabolic patterns they’ve identified give scientists specific areas to investigate next.
For dog owners, the advice is fairly simple: maintaining a healthy diet, healthy weight, mobility and cognitive health may help dogs age better, just as those habits can benefit people.
