Eating less protein could slow aging, review of 350 studies finds

A major review of more than 350 studies suggests that eating less protein could slow aging, improve metabolic health, and potentially extend lifespan, challenging the widespread belief that more protein is always better. Researchers warn that many sedentary adults may be consuming too much protein, while emphasizing that individual needs depend on age and physical activity. Protein is everywhere these days. From breakfast cereals and coffee to bottled water, manufacturers are adding extra protein to an expanding range of everyday products. But while consumers are being encouraged to eat more of it, a major scientific review suggests that cutting back on protein could offer surprising benefits for health and longevity.

After examining more than 350 scientific papers, researchers found evidence that reducing protein intake may help slow biological aging, improve metabolism, and, under certain conditions, extend lifespan. The potential benefits appear to involve several processes that influence how the body uses energy, responds to nutrients, protects cells from damage, and maintains healthy cellular function. The findings, published in the Cell Press journal Cell Press Blue, raise an important question about the growing enthusiasm for high-protein diets. Could many people be consuming far more protein than their bodies actually need? "It's absolutely crystal clear that there