If you are obese, weight loss surgery (bariatric surgery) may be an option to help you control your weight. Bariatric surgery is intended for people who are approximately 100 pounds or more overweight (with a Body Mass Index of 40 or greater) and who have not had success with other medical therapies such as diet, exercise, medications, etc. In some cases, a person with a Body Mass Index (BMI) of 30 to 35 or greater with one or more co-morbid conditions may be considered for low BMI bariatric surgery.