This reads primarily as if it were a textbook translated for the layperson. It's also an anecdotal autobiography: one man's personal opinions (Dement is director of the Stanford University School of Medicine Sleep Disorders Clinic) and a fervent plea for research funds--particularly from the government. But the reader will still learn just about everything that is known about sleep, dreams (Freudians beware), and even something about sex (enjoy). In a way, the book really describes the gamut of medical practice or what a doctor does in diagnosing and treating any illness. It also discusses insomnia, narcolepsy, sleep apnea, jet-lag, and many other sleep-related disorders and their many remedies (the book says they are not diseases). Recommended for general medical collections.--Edward R. Pinckney, Beverly Hills, Cal.