In this milestone 100th episode of PLANT CEO, we welcome Dr. Michael Greger, renowned author and founding member of the American College of Lifestyle Medicine, to discuss his latest book, "How Not to Age." Dr. Greger delves into the science of longevity, exploring how diet and lifestyle choices can significantly impact our health and lifespan. He shares surprising findings on cognitive decline, the effects of various diets, including Keto and Mediterranean, and the potential benefits of protein restriction. Dr. Greger also discusses the role of specific foods and beverages like green tea and coffee in promoting longevity, while warning against the long-term risks of high-fat diets. Throughout the conversation, Dr. Greger emphasises the power of a whole food plant-based diet in preventing and potentially reversing age-related diseases. He addresses common misconceptions about ageing, provides insights on supplement use, and expresses concerns about the anti-ageing industry's commercialisation. The interview concludes with Dr. Greger's optimistic message that we have significant control over our health destiny through our dietary and lifestyle choices. This special centennial episode offers valuable, evidence-based advice for anyone interested in living a longer, healthier life.