Yet another nonsensical tome by "Dr." Hulda R. Clark (She is NOT a medical doctor. She has a Ph.D. degree in physiology from the University of Minnesota, and a naturopathic (N.D.) degree from Clayton College of Natural Health, a correspondence school.)Briefly, she claims that cancer, AIDS, and well, just about every disease there is, is cause by parasites that can be eradicated with a low-voltage device known as a "Zapper."I am a ardent believer in alternative and complementary medicine, but in my own humble opinion, "Dr." Clark's theories are pure quackery.Before wasting your time or money on this or any other books by "Dr." Clark, I would suggest you visit http://www.quackwatch.org/01QuackeryRelatedTopics/Cancer/clark.html and read Dr. Stephen Barrett, M.D.'s detailed and insightful article titled, "The Bizarre Claims of Hulda Clark."