Researchers at Waseda University in Japan have conducted a study suggesting that a balanced diet with moderate protein intake may slow down aging by positively affecting metabolic health. The study was carried out on young and middle-aged mice, observing the effects of various protein levels as they aged. The findings indicate that protein requirements change throughout life, and the ideal balance may extend health span. However, the application of these findings to humans still requires further exploration.
  

Key Points: 

1. The study conducted by Waseda University concluded that consuming moderate levels of protein can have positive effects on metabolic health, delaying the aging of the body.
2. The research, led by Assistant Professor Yoshitaka Kondo, examined effects on skeletal muscle weight, liver and plasma lipid profiles, and plasma amino acid profiles in mice, finding that those with moderate protein intake had lower blood sugar and lipid levels.
3. The study reveals that protein requirements fluctuate throughout life, being higher in youth, reducing in middle age, and rising again in old age, a pattern that may also apply to humans.
4. The findings hint at the possibility of improving metabolic health and extending lifespan in humans through proper nutrient balance and intake, though more research is needed to confirm the applicability to humans.
5. The research does not promote excessive protein intake, especially from sources like red meat, but rather emphasizes a balanced and moderate approach.

Source: https://www.mensjournal.com/news/eating-protein-slows-down-aging