A review of over 350 papers published July 31 in Cell Press Blue suggests that reducing protein intake may improve metabolic health and slow aging-related biological processes.
Researchers found that restricting specific amino acids like valine increased lifespan in male mice by 23% and improved insulin sensitivity in human trials.
While current US guidelines recommend 1.2–1.6 grams of protein per kilogram of body weight, the study suggests sedentary adults may benefit from lower consumption to avoid inflammation and insulin resistance.