Too much protein may reduce longevity in sedentary adults, review finds

Eating more protein than needed may reduce longevity in sedentary adults, a University of Wisconsin-Madison review of over 350 studies concluded. The optimal intake depends on age, activity and health, researchers said. Higher protein supports muscle growth, but excess offers little benefit and may strain kidneys or disrupt bone balance. Adding exercise can help the body use protein better. Dietitian Tanya Freirich advised personalizing intake, favoring plant-based proteins, eating whole foods, and using a plate of 50% vegetables, 25% protein, 25% starches. Consult healthcare providers.