University of Eastern Finland (UEF Viestintä) Sep 10 2025 Diet doesn't just fuel the body, it sends molecular signals that can slow down or speed up biological aging, according to a new perspective in npj Aging (Nature Portfolio). The authors explain that biological age, a measure of functional health, can diverge sharply from chronological age and that targeted nutritional and lifestyle choices can bend the trajectory toward healthier aging. Nutrition is one of the strongest levers we have to