This Handbook bridges the fields of eating disorders and obesity to provide a state-of-the-art resource. Featuring 101 chapters written by leading figures in both fields, this book covers every topic and conceptual approach in a range of areas from molecular biology to prevention. Initial chapters discuss subjects common to the two fields, such as energy regulation, genetic influences on body shape and weight, basic biology of hunger and satiety, nutrition, development of body image, and social influences on eating and weight. Later sections confront issues specific to eating disorders, followed by those issues specific to obesity. Accessibly written, the chapters in this Handbook comprehensively cover etiology, physiology, psychology, treatment, and prevention. The book will be invaluable for psychiatrists, psychologists, social workers, counsellors, and medical doctors working with clients who experience eating disorders and/or obesity. It can also serve as a student text for courses on eating disorders and obesity.