How Does Bariatric Surgery Work?
There are two basic ways that bariatric surgery works to help patients lose weight and improve or resolve co-morbidities: One way is malabsorption, the other is restriction or a combination of both. The most common bariatric surgery performed today, is the Roux-en Y gastric bypass surgery, uses both.

Restrictive procedures limit food intake:
Procedures that use restriction limits the amount of food patients can eat. This is accomplished surgically by creating a small stomach pouch. When eating, the pouch fills quickly and gives a feeling of fullness much sooner. Because patients feel satisfied and full sooner, they eat less.