Advantages of gastric bypass surgery In a current report about the long term advantages of gastric bypass surgery great outcomes were still being seen 12 years post-operative, an observational research study discovered. Comprising of 2 nonsurgical relative groups, there were 417 clients who looked for out surgery, however did not go through surgery primarily due to insurance protection (non-surgery group 1). After 12 years, neither nonsurgery group accomplished a substantial mean modification in weight loss: Group 1: -6.4 pounds (-15.2 to -2.2, suggest modification -2.0) Two years after gastric bypass, the surgery group reported a considerable adjusted mean body weight modification of -99.2 pounds from standard (95 ).