First, let’s define obesity and see who exactly qualifies for a lap band or gastric banding. Eligibility is based on Body Mass Index or BMI. Research supports the benefits of weight-loss surgery for those who meet the following requirements: You have a BMI over 35 or 40 percent and are experience negative health-related side effects. You cannot maintain a healthy weight regardless of exercise and medically-supervised diets You are more than 100lbs overweight You have type 2 diabetes, high blood pressure, or are prone to strokes all due to being overweight You don’t need to visit a doctor’s office to calculate your BMI. There are many free tools online. All you need to know is your height and weight. If your BMI is over 35% then you are more prone to long-term obesity related illnesses. Therefore, you might want to discuss with your doctor about gastric banding. If you have Type 2 diabetes and a BMI over 35%, then gastric banding might be right for you. Researches show that diabetics who undergo weight-loss surgery see numerous benefits as long as they follow post-surgery rules and care.