Friendship isn’t just a feel-good concept—it’s essential for your health, happiness, and longevity. In this episode of The Doctor’s Farmacy, I sit down with world-renowned author and leadership expert Simon Sinek to explore the science and psychology of friendship—why we need it, how it impacts our biology, and what it takes to build deep, meaningful relationships in an increasingly disconnected world. In this fascinating conversation, we discuss: The surprising link between friendship and physical health—how loneliness drives inflammation, chronic disease, and even early death. Why your five closest friends determine your habits, health, and overall well-being. The social contagion effect—how behaviors like diet, exercise, and even emotions spread through friend groups. Why food, fitness, and lifestyle interventions won’t work unless we also address social health. The biggest friendship mistakes people make—and how to fix them. The missing conversation in longevity research—why friendship might be the ultimate “biohack.” If you’ve ever wondered why making friends as an adult feels so hard, or how to create stronger connections in your life, this is an episode you won’t want to miss. View Show Notes From This Episode Get Free Weekly Health Tips from Dr. Hyman Sign Up for Dr. Hyman’s Weekly Longevity Journal This episode is brought to you by Seed, PerfectAmino, Fatty15, Sunlighten, and AirDoctor. Seed is offering my community 25% off to try DS-01® for themselves. Visit seed.com/hyman and use code 25HYMAN for 25% off your first month of Seed's DS-01® Daily Synbiotic. Get pure essential amino acids today. Go to bodyhealth.com and use HYMAN20 to get 20% off your first order. Head to fatty15.com/hyman and use code HYMAN for 15% off your 90-day subscription Starter Kit. Visit sunlighten.com and save up to $1400 on your purchase with code HYMAN. Get cleaner air. Right now, you can get up to $300 off at airdoctorpro.com/drhyman.