Ray Sahelian, M.D., obtained a Bachelor of Science degree in nutrition from Drexel University and completed his doctoral training at Thomas Jefferson Medical School, both in Philadelphia. He is certified by the American Board of Family Practice. A popular and respected physician and medical writer, Dr. Sahelian is internationally recognized as a moderate voice in the evaluation of natural supplements. In his books and writings, he discusses both the benefits and risks of these supplements. Publications and Books by Ray Sahelian M.D.