Dr. Peter J. D'Adamo is a noted naturopathic physician, researcher, lecturer, and author of the revolutionary Eat Right 4 (for) Your Type series. His extensive research and clinical testing of the connection between blood type, health and disease have garnered international recognition and led to groundbreaking work with many illnesses. Dr. D'Adamo's books have been translated into more than fifty languages.
Catherine Whitney is the coauthor of numerous bestselling books on health and medicine.