International experts from world-renowned medical schools comprehensively review for practicing clinicians and scientists alike the latest understanding of the epidemiology, causation, and consequences of diabetes and obesity. The authors discuss in detail their diagnosis, clinical manifestations, complications, and best practices for diagnosis and treatment. They also review the history and epidemiology of these conditions, explain their genetics and pathophysiology, and illuminate their known mechanisms and interactions. State-of-the-art survey-chapters critique current approaches (lifestyle and pharmacological) to the treatment of these conditions.