Sara Gottfried, MD, is a Harvard-educated physician-scientist and a clinical assistant professor in the Department of Integrative Medicine and Nutritional Sciences at Sidney Kimmel Medical College, Thomas Jefferson University, where she serves as the Director of Precision Medicine at the Marcus Institute of Integrative Health. Her clinical focus is performance-based and personalized care of executives and professional athletes. She is the New York Times best-selling author of four previous books about the interface of mental, physical, and spiritual health, including Women, Food, and Hormones and The Hormone Cure. She lives in Mill Valley, California.