David L. Carroll is the author of more than thirty books and ten network TV programs. He now specializes in medical self-help books, including Living with Parkinson's and The Complete Book of Natural Medicines, and film documentaries on medical technology and drug prevention.
Wahida Karmally, M.S., is Director of Nutrition at the Irving Center for Clinical Research, Columbia-Presbyterian Medical Center. She is a frequent contributor to Newsweek.
