Dr. Mark Hyman is a pioneer of a new way of thinking about both health and chronic disease. He’s the director of the Cleveland Clinic for Functional Medicine, the founder of the Ultra Wellness Center, and a New York Times–bestselling author of books like Food: What the Heck Should I Eat? And now he answers that question for us, dispelling a host of dietary misconceptions and controversies. Using science and research, Hyman contextualizes the incredible results his patients have seen after adopting his food-first philosophy—which is poised to change the future of modern medicine.