A new scientific review suggests that consuming less protein, rather than more, may promote healthier aging and increase lifespan for many people.
Published on July 31 in the Cell Press journal, the review analyzed more than 350 studies examining the relationship between lower protein intake and longevity.
Researchers found that reducing protein consumption may improve metabolism, regulate how cells respond to nutrients, reduce cellular damage, and help maintain normal cell function—factors that collectively support healthier aging and a longer life.
Lead author Dr. Dudley Lamming of the University of Wisconsin–Madison explained that protein remains essential for physically active individuals, as it supports muscle growth and enhances exercise performance.
However, he noted that most people are not highly active and may be consuming more protein than their bodies actually require, potentially leading to negative health effects over time.
Experts emphasized that protein requirements vary based on age, overall health, physical activity, and lifestyle. They recommend following a balanced diet and seeking professional nutritional advice rather than relying on high-protein trends.
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