Gastric sleeve surgery, also known as sleeve gastrectomy, is a type of weight loss surgery that involves the removal of a portion of the stomach to reduce the amount of food that can be consumed and help with weight loss. Over the past decade, it has become one of the most popular bariatric surgery options in the United States. This is likely due to its effectiveness, the lower risk of complications compared to other bariatric surgeries, and the fact that it doesn't require the rerouting or removal of parts of the digestive system like gastric bypass surgery does.