For over 20 years, Peter D'Adamo has extensively researched the connections between blood type, food, and disease. His first book, Eat Right 4 Your Type, is the only book to offer individualised health and diet programs based on the differences between blood types.

Eat Right 4 Your Type became a New York Times bestseller and brought worldwide recognition to D'Adamo's blood type theories.

Named Physician of the Year in 1990 by the American Association of Naturopathic Physicians, D'Adamo currently serves on the Board of Trustees for Bastyr University, the nation's leading naturopathic institution. D'Adamo is the founder and editor emeritus of the Journal of Naturopathic Medicine. He maintains a small private practice in Stamford, Connecticut, and lectures around the world.