 A systematic review of 22,094 cases of morbidly obese patients submitted to bariatric surgery has shown that resolution of T2DM was achieved in 76.8 of the cases, improvement being achieved in 86 of cases. Among the criteria used to diagnose metabolic syndrome, fasting glucose levels are the first to return to normal in patients submitted to Silastic ring gastric bypass SRGB, a modification of the traditional RYGB which consists in adding a Silastic ring to the gastric bypass operation. Normoglycemia after bariatric procedures, as well as diabesity itself, is multifactorial. Normoglycemia is observed as a result of dietary control, decreased plasma levels of ghrelin, weight loss and reduction of body fat, as well as of the release of gastrointestinal hormones that interfere with the function of pancreatic β cells incretins. 