Book excerpt: This book covers the management of various metabolic, nutritional and hormonal complications that arise after bariatric surgery. Until now bariatric surgeons have focused on mastering the surgical technique and reducing surgical complications. A number of metabolic and nutritional complications in the post-surgical phase can remain undiagnosed or unreported with a potential for irreversible morbidity. The book is edited by a team of experienced surgeons and bariatric nutritionists to provide a balanced perspective on the subject. It includes chapters on the prevention and subsequent diagnosis and management of these complications early in the course and explaining each complication with one or more suitable case reports. This book is relevant for practicing as well as aspiring bariatric surgeons, nutritionists/dieticians and bariatric physicians.