Laproscopic Roux-en-Y gastric bypass is an operation which has been progressively improved since the it was first developed in the 1960s. It combines a bypass of the first part of the gut with a reduction in size of the part of the stomach which accepts food. It therefore works in a few different and synergistic ways to achieve weight loss.
Laparoscopic RGB is a technically demanding procedure, and not all weight loss surgeons will offer this operation. However, internationally, this operation has been shown to have some of the best results and long-term outcomes.
Surgery is safer and more effective than medication-based therapy in terms of weight loss and resolution of weight-related medical problems. People undergoing weight-loss surgery have lesser chance of dying over the next 5 years than morbidly obese patient not having surgery.
Patients who undergo laparoscopic RYGB typically experience 60-70% excess body weight loss, with >75% control of medical problems. In general, these outcomes are better than gastric banding procedures, which have 45-50% excess body weight loss and less predictable improvement of medical problems.
Comparison of improvement of medical conditions after bariatric procedures: