This is the first book that explains in detail how to adapt Acceptance and Commitment Therapy (ACT) to the serious and complex issues of anorexia nervosa. The book describes how to apply ACT to eating disorders and the spectrum of behaviors associated with eating disorders. It is intended for clinical and educational purposes, as well as for guiding clinical research, and is based on the experience of treating individuals with anorexia nervosa and their families at the Center for Eating Disorders at Duke University Medical Center. The book provides all the necessary information for conducting functional assessments of adolescents and adults, as well as for achieving individual treatment goals, starting with the restoration of normal body weight. It discusses ways to involve parents and other family members in treatment. Additionally, the book includes scenarios for the therapist, sample dialogues, case examples, and handouts. This book can be used to treat clients with anorexia nervosa of all ages. Leading authorities in the field of mental health describe interventions based on the principles of ACT – defusion, acceptance, present-moment awareness, observer perspective, values, and proactivity. The book provides all the necessary information for conducting functional assessments of adolescents and adults, as well as for achieving individual treatment goals, starting with the restoration of normal body weight. It discusses ways to involve parents and other family members in treatment. Furthermore, it includes scenarios for the therapist, sample dialogues, case examples, and handouts.