This book covers the development and treatment of childhood and adolescent obesity. It is written from a biopsychosocial perspective and explores obesity from a holistic perspective and addresses the extent of the obesity epidemic and how obesity is defined and assessed in children. It also chronicles the varying causes and contributors to childhood obesity as well as the physical, psychological, and social consequences of it. The author highlights how a psychologist assesses childhood obesity and the potential psychological disorders related to obesity and also includes descriptions of specific interventions for childhood obesity. The intervention section integrates a community-based perspective that is often lacking in the literature and specifically addresses underserved populations. Finally, this book concludes with practical case studies, discussion questions, and case recommendations.