Associations between diet quality, epigenetic aging and epigenome in two population-based cohorts.

Adherence to healthy diets is linked to reduced epigenetic aging and distinct DNA methylation profiles, with minimal overlap among high adherence individuals across ten diet scores.

• Why it matters: Understanding how different healthy dietary patterns influence biological aging and epigenetic mechanisms can inform personalized nutrition strategies and improve health outcomes.
• What they did: The study analyzed data from two large cohorts, comparing ten diet quality scores and their associations with epigenetic aging markers and DNA methylation profiles, involving thousands of participants.
• The result: Findings reveal that while adherence to healthy diets varies widely, these patterns converge on similar biological pathways, suggesting common epigenetic mechanisms that promote health despite dietary differences.