Just 4 Weeks of Simple Diet Changes Reversed Signs of Aging in Older Adults

A University of Sydney study tracked 104 adults aged 65 to 75 over four weeks of diet change.

Biological-age markers fell in three of four diet groups, with the clearest improvement in the high-carbohydrate omnivorous group.

Lower-fat and more plant-based diets were also linked to short-term reductions in aging biomarkers.

Researchers say the results suggest diet may quickly affect aging-related measures, but longer studies are needed to know the health impact.