Malabsorptive Surgery: Surgical Techniques, Results, and Challenges describes the development of classic and new malabsorptive surgical techniques. Coverage includes the results obtained after the procedures, as well as postoperative complications - including early complications (associated with the difficulty of the operation) and late complications (associated with nutritional sequelae). This book is the perfect reference for basic and translational research focused on the mechanism of action of malabsorptive procedures, that goes beyond the bypassing of intestinal loops, affecting the regulation of hormonal signals. The content is also useful for bariatric surgeons and endocrinologists dealing with the bariatric options and results. Despite the aims of bariatric surgery focusing on performing procedures associated with low postoperative complications rates (mostly restrictive procedures), there is increasing evidence showing mid- and long-term failure of restrictive and mixed procedures in terms of weight regain and recurrence of comorbidities. This has increased the need for revisional surgeries after failed primary procedures, and consequently, increased the popularity of malabsorptive techniques. Introduces new malabsorptive techniques, including OAGB and SADIS, which have improved results and reduced the nutritional sequalae of more classic approaches like biliopancreatic diversion and duodenal switch Provides insights into basic and translational research focused on the mechanism of action of malabsorptive procedures that goes beyond the bypassing of intestinal loops, thus affecting the regulation of hormonal signals Presents step-by-step procedures with accompanying images to guide performance of specific procedures