Despite the allure of the more simplistic loop gastric bypass surgery, the American Society of Bariatric Surgery deems the procedure unsafe. Very few bariatric surgeons perform this modified version of weight loss surgery viewing it as obsolete and maintain traditional Roux-en-Y as the gold standard.

What Is Mini Gastric Bypass Surgery?

MGB combines two surgeries: Collis gastroplasty — lengthening of the esophagus by creating a tube from the upper part of the stomach — and Billroth II loop gastrojejunostomy, which involves connecting the small intestine to the stomach.

Essentially, a narrow, long pouch is formed and reconnected to the intestines about 6 feet from the stomach without actually severing the small intestines. No food is emptied into the larger, sectioned-off portion of the stomach or small intestine, thereby limiting calorie absorption.