Bariatric surgery plays an important role in the treatment of obesity; in this comprehensive resource the worldwide leaders of the field provide the most up-to-date information on the psychosocial issues that affect their patients. Included is an overview and history of surgical procedures, complete with illustrations, practical advice on topics such as physical activity and nutritional care after surgery, and essential information that allows clinicians to assist their clients as much as possible; for example, how pre-weight loss surgery psychosocial evaluations can serve as clinical interventions in their own right, and how structured interviews and questionnaires can be used in multiple contexts such as screening, treatment planning, and prognostic assessment. A distinctive chapter includes an overview of the special issues present in treating adolescents, who increasingly are the target of bariatric surgery procedures. This book is an essential reference for clinicians from the evaluation through the follow-up and aftercare of bariatric surgery patients.