Book excerpt: ​The fully updated 2nd edition of this textbook continues to serve as a comprehensive guide for information dealing with the ever-evolving field of bariatric surgery. The chapters are written by experts in the field and include the most up-to-date information, including new sections on quality in bariatric surgery, endoscopic surgery, and management of bariatric complications. This new edition continues to cover the basic considerations for bariatric surgery, the currently accepted procedures, outcomes of bariatric surgery including long-term weight loss, improvement and resolution of comorbidities, and improvement in quality of life. Other special emphasis is given to the topics of metabolic surgery and surgery for patients with lower BMI. In addition, new endoscopic bariatric procedures including the gastric balloons, endoscopic revisional procedures, and newer pharmacotherapy for obesity are reviewed. The ASMBS Textbook of Bariatric Surgery Second Edition will continue to be a leading source of scientific information for surgeons, physicians, residents, students, and integrated health members today and for years to come.