Association Between Weight Loss and the Risk of Cancer after Bariatric Surgery

Objective The goal of this study was to determine whether the reduction in cancer risk after bariatric surgery is due to weight loss. Methods A retrospective matched cohort study of patients undergoing bariatric surgery was conducted using data from a large integrated health insurance and care delivery system with five sites in four states. The study included 18,355 bariatric surgery subjects and 40,524 nonsurgical subjects matched on age, sex,...