Drew Ramsey, MD is a psychiatrist, author, and farmer. He is a clear voice in the mental health conversation and one of psychiatry’s leading proponents of using nutritional interventions. He is an assistant clinical professor of psychiatry at Columbia University College of Physicians and Surgeons.

IN-Q is a globally-recognized and highly celebrated spoken word poet tackling themes like love, loss, forgiveness, and belief. His new book is called Inquire Within.

Molly Maloof, MD is a San Francisco-based physician and the founder & Chief Medical Officer of ADAPTIVE/IQ.

Terry Walhs is a physician who has effectively battled her MS with diet principles. Her new book, The Wahls Protocol: A Radical New Way to Treat All Chronic Autoimmune Conditions Using Paleo Principles, is essential brain-food reading.

Michele Promaulayko is the former Editor-in-Chief of Women's Health, Yahoo Health, and Cosmopolitan. Her new book is Sugar Free 3: The Simple 3-Week Plan for More Energy, Better Sleep & Surprisingly Easy Weight Loss!

David Nurse is an NBA life and optimization coach and worldwide motivational speaker. As a former professional basketball player (both international and domestic) and a coach for the Brooklyn Nets, David has personally helped over 100 NBA players with their personal and professional development both on and off the court. He's the author of Pivot & Go: The 29 Day Mindset Blueprint to Redefine and Achieve YOUR Success.

Mark Hyman, MD is a board-certified physician, a leader in the field of functional medicine, author of 11 New York Times best-selling books, and is the author of the new book, Food Fix: How to Save Our Health, Our Economy, Our Communities, and Our Planet—One Bite at a Time.

Paul Saladino is a board-certified internal medicine physician, carnivore diet advocate, and the author of The Carnivore Code: Unlocking the Secrets to Optimal Health by Returning to Our Ancestral Diet.

William Davis, MD is a cardiologist and the author of the internationally best-selling Wheat Belly series of books. His latest book is Wheat Belly (Revised Edition): Lose the Weight, Lose the Weight, and Find Your Path Back to Health.

Mark Sisson is the author of Keto For Life: Reset Your Biological Clock in 21 Days and Optimize Your Diet for Longevity. He is a former 2:18 marathoner and fourth-place Hawaii Ironman triathlete, and presides over a wide-ranging Primal enterprise, featuring the Primal Kitchen line of healthy condiments.