What are the types of weight-loss surgery?

Laparoscopic Roux-en-Y Gastric Bypass

Roux-en-y, stomach, stomach pouch, pancreas, food, digestive juice, duodenum, jenunum

How it works: This procedure involves creating a small stomach pouch. This reduces the amount of food you can eat. The intestine is connected to the new pouch and rerouted. The pouch is connected directly to the lower part of the small intestine. Food bypasses the lower stomach, the first part of the small intestine (duodenum) and some of the second part (jejunum). The changes created during gastric bypass cause changes in the way the gut and the pancreas interact. This affects diabetes control even before weight is lost. Patients generally can return to work within three to four weeks. Gastric bypass is a good surgical option in many patients.

Laparoscopic Sleeve Gastrectomy (LSG)

Sleeve gastrectomy with disected fundus placement, normal stomach, smaller stomach, food, pancreas

How it works: LSG reduces the size of the stomach and limits food intake. LSG is technically easier to perform than gastric bypass and is a good surgical option in many patients. Patients who are at risk for undergoing anesthesia, or who have a heart or lung problem and should not undergo a long surgery, may also benefit from this surgery. Patients generally stay in hospital for one night and can return to work within three to four weeks.

Duodenal Switch (DS)

duodenal switch, duodenum, jejunum, smaller stomach, pancreas, food, ileum

How it works: DS is another procedure that results in calories not being absorbed well. DS is a combination of LSG and a large bypass procedure. The procedure creates a smaller stomach that is connected to the farthest part of the small intestine. The duodenum, jejunum and part of the proximal ileum are bypassed and then connected to a point near the ileocecal valve. The surgery is effective, but also riskier than other procedures. It is generally only for people who have BMI higher than 50.

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