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Journal ArticleAging cell·Graded and published ·Last edited

Better Diet Linked to Slower Epigenetic Aging, But Exercise Steals the Show

Graded Moderateobservational analysis of two US cohorts with 3,910 adults linked to death records, yet the diet link weakened once physical activity was accounted for.

Design
Participants
3,910
Duration
Funding
Key Insight

This study suggests pairing a healthy diet with regular physical activity may matter more than diet alone.


In two large U.S. studies of older adults, eating a higher-quality diet was tied to slower epigenetic aging and lower death risk. About 44% of the diet-mortality link was explained by GrimAge, a biological aging clock. But when researchers accounted for physical activity, the diet effect mostly disappeared. Movement may matter as much as the menu.

Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.