As the most researched and most frequently performed obesity surgery, this procedure is considered the "gold standard" in bariatric treatment. It is routinely performed laparoscopically, which is minimally invasive. The procedure involves the cutting and stapling of the stomach and bowel, along with a bypass of a portion of the digestive tract.
The initial weight loss is rapid. Good long term weight loss is achieved through a combination of restriction of food intake capacity and a reduction of food absorption. As with all bariatric procedures, follow-up is essential to ensure proper nutrition.