The Peptides Quietly Accelerating Aging | Dr Valter Longo

Dr. Valter Longo, Professor of Gerontology at USC and creator of the Fasting-Mimicking Diet, joins Simon Hill on The Proof to discuss the current hype around peptides and GLP-1 agonists. He argues that growth-hormone-releasing peptides likely accelerate aging, not extend life, and reveals the body composition data showing that GLP-1 users lose substantial lean mass and fat, with a 92% dropout rate after 3-4 years. Longo presents evidence from over 47 clinical trials of the Fasting-Mimicking Diet, including biological age improvements, and clarifies the Harvard protein intake data linking animal protein to higher mortality. He also makes a case against ketogenic diets for longevity and shares the optimal IGF-1 range and how to achieve it through diet and meal timing.