Several major developments have occurred since the last edition of this volume was published, including new clinical trials, discoveries related to drug use, and greater understanding of the benefits of weight loss in obese patients. Now in its fourth edition, this volume continues to offer unparalleled depth and breadth of coverage concerning this global and chronic disease that affects and exacerbates associated conditions including diabetes and heart disease. The book covers prevention, evaluation of the overweight or obese patient, and treatment options involving behavior modification, diet, exercise, medications, and surgical procedures.