What type of surgery creates a new small stomach cut directly from the existing stomach and connects to the jejunum?

The Roux-en-Y gastric bypass is a type of weight-loss surgery that involves creating a new, smaller stomach pouch from the existing stomach. This involves cutting a portion of the stomach to form the smaller pouch and then connecting it directly to the jejunum, which is the middle section of the small intestine.

This surgical technique results in significant weight loss by limiting the amount of food the stomach can hold and altering the digestive process, as the food bypasses a substantial part of the stomach and the upper part of the small intestine. By doing this, the procedure not only restricts food intake but also reduces the absorption of nutrients and calories, aiding in weight loss and the potential improvement of obesity-related diseases.

The formation of a direct connection to the jejunum plays a critical role in the success of this procedure, as it enables food to be transported more quickly through the digestive system, further contributing to the weight-loss process.