When patients know how to ask the right questions of their health-care providers, says renowned Dr. William Feldman, they will be better equipped to make appropriate decisions. This book gives the layperson the knowledge and skills required to evaluate whether any recommended health intervention will do more good than harm. Individual chapters cover prevention, screening, diagnosis, prognosis, treatment, and clinical practice guidelines, using real-world case scenarios that teach exactly what questions to ask, and how to respond to the answers.