Weight loss surgery, also called bariatric surgery, helps you lose excess weight, which also means reduces the risk of medical conditions connected to obesity. One of the two ways a weight loss surgery helps is that it physically limits the amount of food you can eat. The other one is that it can bypass the short intestine, reducing the number of calories absorbed. Here are the 5 types of weight loss surgery and their effects.
In this type of surgery, part of your stomach is separated and removed, while the remaining part is formed into a tube-shaped structure. This way, your stomach can’t hold as much food as before due to a smaller size. Also, ghrelin, the hormone that regulates your appetite, is produced in a smaller amount, which may reduce your urge to eat.
Still, it’s important to note that this type of surgery doesn’t affect the process of calories and nutrients absorption.
Roux-en-Y gastric bypass
During this procedure, a small pouch at the top of your stomach is created, becoming the only part of the stomach that’s able to receive food. It greatly affects the amount of food you can eat. The small intestine is connected to the pouch, so the food goes directly from the intestine to the pouch.
However, the digestive juices produced in the main stomach are still present, so this part is reattached further down. This allows the juices to go into the small intestine. In short, this procedure reduces the number of absorbed calories and nutrients absorbed.
Biliopancreatic diversion with duodenal switch
Another procedure where a part of the stomach gets removed. Only here, the valve which releases the food to the small intestine remains, as well as duodenum (first part of the small intestine). The middle section is then closed, while the last part gets connected directly to the duodenum – the duodenal switch.
The separated section is reattached to the end of the intestine, allowing the digestive juices to flow in it – the biliopancreatic diversion.
Through this type of surgery, most of the intestine doesn’t receive food, reducing the number of absorbed calories and nutrients. Also, the smaller size of the stomach doesn’t allow the same amount of food as before.