A surgery that consists of two components.
1) Restriction: A smaller stomach is created with special staplers, generating a satiety sensation after ingesting a smaller amount of food.
2) Malabsorption: Where the path of the ingested food is deviated from the small stomach to a further part of the intestine, creating a bypass area of the intestine that limits the contact and absorption of the ingested calories. Today, Gastric Bypass surgery is the gold standard of all treatments used for weight loss and diabetic treatment.

An operation that has become the most performed surgery in the United States due to its comparable results with the gastric bypass. The difference is that the Sleeve Gastrectomy is less invasive and less costly, increasing the demand for it. It is a restrictive surgery in which the stomach is reduced removing 80% of it, leaving capacity for 20% of the food that previously needed to fill the stomach. It restricts the amount of food needed to feel satisfied, limiting calories and thus producing its effect of weight loss.

A very small pouch or reservoir is created generating restriction (less food required to produce satiety), this pouch is connected to a distant part of the small intestine (this limits the amount of calories absorbed) using only one connection or anastomosis. Besides weight loss this procedure also has the capacity to improve diseases. It’s gaining popularity due to its reduced invasion in comparison with the normal gastric bypass.