The gastric bypass or Roux-en-Y surgery is the most common surgery in the U.S. This procedure may be done either through an open approach (large incision) or via the more common laparoscopic approach.
The Roux-en-Y gastric bypass surgery procedure
During the operation, surgical staples are used to create a small pouch at the top of the stomach. A segment of the small intestine is then attached to this pouch. Food bypasses most of the stomach and the first part of the small intestine.
Most patients typically have a one- to three-night hospital stay.
Benefits of Roux-en-Y Gastric Bypass
The Roux-en-Y gastric bypass operation helps you lose weight by:
Caloric restriction: The small pouch created can hold only two to four tablespoons at a time, thereby drastically reducing the amount of food that can be eaten.
Nutrient malabsorption: Food bypasses a large portion of the stomach and the first portion of the intestine.
Additional benefits of Roux-en-Y gastric bypass include:
Significant hormonal changes for hunger and glycemic control
Immediate and robust weight loss (six to seven pounds per week in the first six to 12 months)
It is the most durable procedure for long-term weight loss