Sleeve gastrectomy is used to treat obesity if:
Body mass index greater than 40 kg per square meter, with or without complications of obesity.
BMI reaches 35-40 kilograms per square meter, and there are serious complications of obesity, such as diabetes, sleep disturbance, snoring, high blood pressure, coronary artery disease, etc.
BMI of 30-35 kg per square meter, difficulty controlling blood sugar levels, or metabolic syndrome.