Diet change tied to ‘younger’ biological age in older adults after 4 weeks

A University of Sydney study found that changing diets in older adults (aged 65-75) for four weeks reduced their biological age in three of four diet groups. Diets varied in protein sources (animal vs. plant-based) and macronutrient focus (high-fat vs. high-carb), with the most significant improvements seen in diets rich in complex carbohydrates and plant-based components. Researchers caution results are preliminary and may reflect short-term effects.