Serotonin has a powerful effect on the brain: enough and you feel great; too little and you may binge on food and alcohol, get a migraine, suffer from insomnia, or become depressed. In fact, millions of people take prescription antidepressants every day to compensate for their low serotonin levels, without knowing that changes in diet and lifestyle may be all they need to improve their mood. This revised and updated edition features the latest research on serotonin, including: the link between yo-yo dieting and serotonin deficiencies; how serotonin is connected to eating disorders; why migraines and depression are more common among women than men; and serotonin's role in relieving irritable bowel syndrome, fibromyalgia, and other chronic pain conditions. The eating and activity program in this book will guide you toward relatively simple changes in your eating and sleep habits, bright light exposure, and activity level that will boost serotonin naturally and benefit your overall health and well-being.--From publisher description.