A massive, basic, and complete guide to family health matters’staying well, diagnosing problems, finding help, dealing with the health care and insurance systems—it’s all here. Komaroff (Editor in Chief of the Harvard Medical Publications) draws here on the resources of the hospitals, clinics, and research centers affiliated with Harvard Medical School. In Part 1, readers are instructed on “Navigating the Health Care System.” Included with the more standard information is a list of organizations that rate health plans, and an essay by Robert Coles on “The Care of the Poor” (reminding us’sadly—that “some people in America are at a substantial remove from doctors and from medical institutions”). There follows a series of illustrations showing “How Your Body Works.” Part 2 covers staying healthy (including advice on diet, exercise, and contraception). Part 3 explains the diagnosis of disease, and Part 4 sets out a lengthy and helpful series of symptom flow charts, for use when problems arise (for menstrual cramps, “Have you recently stopped taking birth control pills?”, or “Do you have fever?”) Part 5 is a system-by-system guide to “Diseases and Disorders,” ranging from the merely annoying to the catastrophic. Part 6 is concerned with caregiving (including home care), and Part 7 considers issues arising at the end of life. There follow sections on medications (including drug interactions) and first aid. Appendices provide lengthy guides to medical terminology, resources for further information, and assorted medical forms and charts. Readers will be able to update this guide from a website keyed to page numbers. In all, an enormous amount of sound information, precisely organized for easy reference.