Dr. Mark Hyman is leading a health revolution—one focused on using food as medicine to support longevity, energy, mental clarity, happiness, and so much more. Mark Hyman, MD is a practicing family physician and an internationally recognized leader, speaker, educator, and advocate in the field of Functional Medicine. Dr. Hyman has turned his passion for Functional Medicine, real food, nutrition, and wellness into activism, working to change our food system on a global scale.