Combining cutting-edge research with a healthy dose of good humor and practical advice, Robert Sapolsky's acclaimed Why Zebras Don't Get Ulcers explains how prolonged stress causes or intensifies a range of physical and mental afflictions, including depression, ulcers, colitis, heart disease and more. This thouroughly updated version of Zebras, which features new chapters on memory, personality and temperament, and stress, and society, is richer than ever with insights into how the nervous system responds to stress and how those responses can be controlled.