A 4-Week Diet Change May Turn Back The Clock on Aging, Study Suggests

A University of Sydney analysis of the Nutrition for Healthy Living study found that four-week diets in adults aged 65 to 75 shifted biomarker-based estimates of biological age.

The omnivorous high-fat diet showed no meaningful effect, while the omnivorous high-carbohydrate diet significantly lowered estimated biological age.

Semi-vegetarian diets also appeared to improve aging markers, though the evidence was less certain.

The results suggest diet changes later in life can quickly improve health-related biomarkers, but it is unclear whether they reduce disease risk or extend lifespan.