Lower protein intake may improve health, extend lifespan in sedentary adults: StudyA review of 350 studies suggests consuming less protein may improve metabolic health and promote longevity in sedentary adults by reducing ageing-related processes. The study, published in the journal Cell Press Blue, reviewed 350 papers on protein restriction and aging. Previous studies have found that eating less protein can extend the lifespan of flies and rodents without reducing calorie consumption. “These studies show that the amount of protein sedentary people are eating today may have negative health consequences, at least at the population level,” Lamming said. He added that while pregnant women and older adults may have higher protein needs, for most sedentary adults, protein-fortified food may not provide the health benefits people expect.