Bariatric surgery is a type of surgery aimed at helping individuals with severe obesity lose weight. These surgeries include gastric sleeve, gastric bypass, and adjustable gastric banding. They work by reducing the size of the stomach or altering the digestive tract to limit the amount of food that can be consumed or absorbed. Bariatric surgery not only aids in weight loss but also improves various obesity-related health conditions such as type 2 diabetes, high blood pressure, and heart disease.