Less Protein, Longer Life? New Research Challenges Popular Diet Trend

What Happened

A review of more than 350 scientific studies suggests that reducing overall protein intake, or limiting certain amino acids such as isoleucine and methionine, may support healthier aging. Researchers found links to improved metabolism, lower inflammation and reduced cellular damage. Eating less protein may activate the body's repair mechanisms and improve blood sugar control, potentially promoting longevity. However, researchers caution that protein needs vary by age, activity level and health status, and the findings do not mean everyone should cut protein intake. Older adults, athletes and some medical groups may still require higher protein consumption.