Living longer could hinge on one surprising dietary change, study review suggests

A new study review suggests that reducing protein intake, rather than cutting calories, may improve metabolic health and longevity for sedentary adults. Lower protein consumption was linked to benefits like reduced cellular damage and improved metabolism, driven by a hormone called FGF21. The review highlights three amino acids (methionine, isoleucine, valine) that may contribute to aging-related pathways when consumed in excess by inactive individuals.