How to Protect Your Brain and Live Longer | Dr. Andrew Weil

In this episode of The School of Greatness, host Lewis Howes interviews Dr. Andrew Weil, a leading figure in integrative medicine, about protecting brain health and living longer. Dr. Weil emphasizes that while the root causes of Alzheimer's and other neurodegenerative diseases remain unclear, environmental factors—such as exposure to agrochemicals, plastics, and toxins—play a significant role. He highlights two of the most impactful preventive measures: avoiding head trauma (especially from contact sports) and not smoking. Nutrition is central to brain health, with strong recommendations for an anti-inflammatory diet rich in polyphenols, antioxidants, and omega-3 fatty acids from fish or algae. He promotes the Green Mediterranean Diet and praises matcha tea, turmeric, and fermented foods for their cognitive and gut health benefits. Stress management is critical, with Dr. Weil advocating the 4-7-8 breathing technique as a powerful, free tool to reduce cortisol and improve mental clarity. He also stresses the importance of lifelong social and intellectual engagement, citing studies showing that strong relationships and mental stimulation are key to successful aging. Dr. Weil shares personal reflections on self-love, midlife growth, and the transformative potential of psychedelics when used responsibly. He concludes with three life truths: everything is as it should be, we can heal ourselves, and self-love is foundational. Greatness, he defines, is using your full potential. Key takeaways include: 1) Prioritize brain health by avoiding head injuries and smoking; 2) Eat a colorful, plant-rich, anti-inflammatory diet with emphasis on polyphenols and omega-3s; 3) Practice the 4-7-8 breathing technique twice daily to reduce stress and cortisol; 4) Stay socially and intellectually active throughout life; 5) Support gut health with fermented foods and prebiotics; 6) Consider psychedelics as a transformative tool only after foundational healing work; 7) Cultivate self-love and acceptance as the bedrock of longevity; 8) Use nature, mindfulness, and integrative practices to activate your body’s natural healing systems.