"The author of the Yeast Connection series and other books tells readers suffering from Chronic Fatigue Syndrome and other causes of exhaustion what they can do to regain their health. If you are eternally tired; live with muscle aches, headaches or stomach aches; are oversensitive to tobacco smoke, perfume and other odors; feel chilly when others are not; have seen many physicians, been given lots of tests, and still told "We don't know why you're tired"-come and see Dr. Crook."