- A major review of over 350 studies suggests eating less protein could slow aging by improving metabolism, reducing inflammation, and activating longevity pathways.
- Protein restriction may offer an alternative to calorie restriction, which is difficult to maintain long-term; studies show it can extend lifespan in animals and improve health in humans.
- Lower protein intake increases the hormone FGF21, which boosts energy expenditure, regulates blood sugar, and reduces inflammation, potentially promoting longer life.
- Excessive intake of specific amino acids like methionine, isoleucine, and valine may activate growth pathways linked to obesity and aging-related diseases.
- Protein needs vary by individual; sedentary people may consume more than needed, while athletes and pregnant women require higher amounts—personalized recommendations based on age and activity are advised.