Gastric bypass is a type of weight-loss surgery that involves creating a small pouch from the stomach and connecting it directly to the small intestine. This procedure, also known as Roux-en-Y gastric bypass (RYGB), can be performed using open, laparoscopic, or robotic techniques. The general steps of this surgery include creating a gastric pouch, creating a biliopancreatic limb, creating a jejunoyejunostomy, and creating a gastroyejunostomy. Gastric bypass surgery can help you lose weight by changing the way your stomach and small intestine handle the food you eat.
After the procedure, ingested food will enter the small stomach pouch and then directly into the small intestine, thus bypassing most of the stomach and the first section of the small intestine. Gastric bypass is usually only done after you've tried to lose weight by improving diet and exercise habits. It can also be done when diet and exercise haven't worked or when you have serious health problems because of your weight. Right after gastric bypass surgery, you may eat liquids, but not solid foods, as your stomach and intestines begin to heal. As with any major surgery, gastric bypass and other weight-loss surgeries pose potential health risks, both in the short and long term.
However, it can also improve your ability to perform routine daily activities, which could help improve your quality of life.