Nutrition & DietExercise and Diet Strategies to Naturally Raise Your FGF21 Longevity Hormone
FGF21 is a hormone discovered in 2000 that promotes metabolic health, fat loss, and longevity. In animal studies, it extends lifespan by 30-40% and reduces body fat without cutting calories. Pharmaceutical versions show promise but carry side effects. The good news: both resistance and aerobic exercise significantly raise FGF21 levels, with weight training producing a 42% increase versus 25% for running. Prolonged fasting also quadruples FGF21, but requires 10 days to work in humans — impractical for most. Ketogenic diets fail to replicate fasting's benefit and may actually suppress FGF21 over time. The article sets up a follow-up piece on specific dietary approaches that can elevate FGF21 naturally and sustainably.
