The adjustable gastric band is a silicone ring that is placed around the upper stomach to limit capacity. It is therefore a type of restrictive barátirca surgery. With this transaction the limited amount of food and the speed with which they pass into the stomach, thus ensures that the patient can sate before and lose weight. It is a simple operation that is performed laparoscopically and is reversible. In these cases, in which must be removed gastric band, stomach generally returns to its natural form. Patients who undergo this procedure should have a BMI between 35 and 40 and commit to change their dietary habits and lifestyle to promote treatment success.