The Roux-En-Y gastric bypass surgery is considered the "gold standard" for weight loss surgery. It is classified as both restrictive and malabsorptive in nature. A 6-10 inch vertical incision is made along the upper portion of the abdomen. The surgeon will staple the top portion of the stomach to create a small stomach pouch, this small stomach pouch functions to restrict food intake (the restrictive portion of the operation). A section of the small intestine called the jejunum is then attached to the small stomach pouch. This allows food to bypass the lower stomach, the duodenum (the first segment of the small intestine), and the first portion of the jejunum (the second segment of the small intestine). This bypass reduces the amount of calories and nutrients the body absorbs (the malabsorptive portion of the operation).

Surgeons Performing this Operation: Dr. Malcolm Robinson and Dr. David Lautz
For more information, visit the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) surgery web pages.