Diana Schwarzbein, M.D., is a leading authority on metabolic healing. She founded The Endocrinology Institute of Santa Barbara where she sub-specializes in metabolism, diabetes, osteoporosis, menopause and thyroid conditions. Along with Nancy Deville, she coauthored The Schwarbein Principle. With Deville and Evelyn Jacob Jaffe, she coauthored The Schwarzbein Principle Cookbook and The Schwarzbein Principle Vegetarian Cookbook.