Sometimes called laparoscopic adjustable gastric band or lap band surgery, this procedure places a flexible band around the upper portion of your stomach to create a small pouch. The band is attached to a tube connected to a port that is inserted under your skin near the abdomen. 

The band can be inflated or deflated with saline injected or extracted through the port. The newly created pouch is able to hold a small amount of food at a time, so you can feel full sooner and longer. 

This procedure does not remove any portion of your stomach; it simply alters the size of the stomach so that you eat less. It is still necessary for you make important nutrition changes. 

Adjustable gastric banding only reduces the size of the stomach and doesn’t actually remove any part of the stomach, which means it does not result in malabsorption; food is digested normally. However, because it does not remove any portion of the stomach, weight loss is slower, and most people do not achieve the goal of losing 50% of excess body weight. 

Gastric banding may also require frequent tweaks and adjustments to find the optimal stomach restriction for each patient, which means more frequent office visits and small procedures. 

Because adjustable gastric banding does not remove any part of the stomach or interfere with the digestive tract, it can be removed, making it the only bariatric procedure that is fully reversible.