Roux-en-Y Gastric Bypass


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:

Gastric Banding


Gastric Bypass


Diabetes resolved

Hypercholesterolaemia resolved

Hypertension resolved

Sleep apnoea resolved


After a RYGB, people should take long-term vitamin supplements (multivitamins, Vitamin B12, and calcium and iron supplementation) and undergo periodic blood testing to identify and treat deficiencies early.


The most frequently reported complications associated with laparoscopic RYGB are wound infection, leak, bleeding, bowel obstruction, lung clots, and narrowing of the stomach pouch.

No surgical procedure is risk free. The information provided here is for general educational purposes only. Before proceeding, you should discuss your particular situation with the doctors at Weight Loss Victoria.

Do you know your BMI ?


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