Weight Loss Surgery (WLS) is also referred to as "Bariatric Surgery", a term derived from the Greek word "baros" meaning "weight". It evolved out of cancer/ulcer operations involving the removal of part of the stomach or small intestine. As patients undergoing these operations lost weight afterwards, Doctors developed the idea of using similar types of surgery to treat morbid obestity. Due to the current high levels of obesity among all asian and US age-groups, and the lack of success with non-surgical weight loss methods, bariatric surgery is becoming a significant option for severely obese patients. Operations such as lap band procedure and Roux-en-Y stomach bypass are now being performed on adolescents as young as 13 years. Bariatric Surgery is known to be the most effective and long lasting treatment for morbid obesity and many related conditions, but now mounting evidence suggests it may be among the most effective treatments for metabolic diseases and conditions including Type-II Diabetes in low BMI patients. Patients who are 15 kg or more overweight.

"Surgery for severe obesity goes way beyond weight loss. This surgery results in the complete remission or significant improvement of Type-II Diabetes and other life-threatening diseases in most patients, and now it can be applied to almost all Type-II Diabetics who are at least 15 kg overweight.