Weight-loss surgery might be an option for people who have extreme obesity (BMI of 40 or more) when other treatments have failed.
Weight-loss surgery also is an option for people who have a BMI of 35 or more and life-threatening conditions, such as:
Severe sleep apnea (a condition in which you have one or more pauses in breathing or shallow breaths while you sleep)
Obesity-related cardiomyopathy (KAR-de-o-mi-OP-ah-thee; diseases of the heart muscle)
Severe type 2 diabetes