This book explains the concept of metabolic surgery and provides step-by-step descriptions of all the principal minimally invasive surgical techniques employed to treat morbid obesity. The approach adopted is very practical. For each procedure, indications, technical aspects, clinical management, and outcomes are described, and helpful tips and tricks, highlighted. Guidance is provided on the management of emergencies and potential complications, as well as on general postoperative management and long-term follow-up. The coverage also includes new frontiers of robotic and endoscopic surgery. While the focus is on surgical techniques, emphasis is placed on the need for a multidisciplinary approach, with explanation of the role of the multidisciplinary team and the bariatric center. In addition, important information is presented on the definition of morbid and severe obesity, incidence/prevalence, pathophysiology, and obesity-related comorbidities. The authors are internationally acknowledged experts who present best practice know-how in the field and draw on the most recent research literature.