The longevity diet is a set of guidelines for healthy eating developed by biochemist Valter Longo, Ph.D., director of the USC Longevity Institute at the USC Leonard Davis School of Gerontology, and is meant to help people live longer, healthier lives. The longevity diet recommends following a plant-based diet that includes little-to-no meat and poultry and periodic fasting. Although the diet was designed for older adults, it has potential health payoffs...