
High-Protein Diets May Backfire on Longevity for Inactive Adults
A UW–Madison review of more than 350 studies suggests that while protein supports muscle, consuming more than the body needs may offer little extra benefit and could shorten longevity in sedentary adults, depending on protein source and amino acid profile. Experts stress personalization, noting that active individuals may still need higher protein and that increasing physical activity helps the body use nutrients. Practical tips to rebalance include: 50% of the plate as vegetables, 25% protein, 25% starch; about 0.8 g/kg/day of protein for low activity (around 1.0 g/kg for more active people); eat a rainbow of fruits and vegetables; switch to plant-based proteins; choose whole, unprocessed foods, and consult healthcare providers for personal guidance.




