New Review Warns Excess Protein May Shorten Lifespan for Inactive Adults
A comprehensive analysis of over 350 studies suggests that eating more protein than needed offers little benefit and could even reduce longevity in sedentary people.
A recent review of more than 350 scientific papers by University of Wisconsin-Madison scientists challenges the notion that higher protein consumption always improves health. The authors conclude that beyond the body’s requirements, additional protein yields little extra benefit and may even lower longevity in sedentary adults, especially when derived from specific sources or amino-acid profiles. Registered dietitian Tanya Freirich, who was not part of the study, recommends personalizing protein intake based on age, activity, and health status, and suggests a balanced plate of vegetables, protein, and whole grains.
She highlights the importance of plant-based proteins, regular strength training, and whole, unprocessed foods to support overall well-being. Freirich also notes that exercise reduces fall risk and enhances quality of life, reinforcing the need for an active lifestyle alongside dietary adjustments.
Why it matters
Understanding optimal protein levels helps people avoid unnecessary health risks and tailor diets to their activity and age.
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