Low-Protein Mediterranean Diet Extends Lifespan and Reduces Fat in Mice

A study conducted by researchers has shown that a modified Mediterranean‑style diet, characterized by reduced protein intake and a precise limitation of the amino acid methionine, extended healthspan in laboratory mice. The dietary regimen led to lower body fat accumulation, decreased markers of frailty, and overall improvements in physiological function compared with standard feeding protocols. The findings were derived from controlled experiments in which mice received the low‑protein, methionine‑adjusted diet over several months, allowing researchers to track changes in metabolism, muscle strength, and lifespan indicators.

Parallel analysis of human population data revealed a correlation between lower consumption of animal‑derived protein and reduced prevalence of obesity and type 2 diabetes. While the observational nature of the human data precludes definitive causation, the consistency with the animal results suggests that a similar dietary approach could confer metabolic and health benefits in people. The researchers propose further clinical trials to evaluate the feasibility and efficacy of protein‑restricted, methionine‑balanced diets as a strategy for preventing or mitigating age‑related metabolic disorders.