Diana Schwarzbein, M.D., is a graduate of the University of Southern California (USC) Medical School and completed her residency in internal medicine and a fellowship in endocrinology at Los Angeles County USC Medical Center. She founded The Schwarzbein Principle Institute in 1993. She sub-specializes in metabolism, diabetes, osteoporosis, menopause, and thyroid conditions, and lectures on these subjects frequently. She is the author of the bestselling books The Schwarzbein Principle, The Schwarzbein Principle II, The Schwarzbein Principle: The Program, The Schwarzbein Principle Cookbook, and The Schwarzbein Principle Vegetarian Cookbook. Visit Dr. Schwarzbein at www.schwarzbeinprinciple.com.