The Mini Gastric Bypass (MGB) is basically a very simple, successful and reversible laparoscopic gastric bypass surgery which is widely used for weight loss. Further, it has been recently renamed as One Anastomosis Gastric Bypass. This type of surgical operation usually takes shorter time, with shorter or similar hospital stay as regular bypass.The Indications are quite similar to regular gastric bypass surgery and the doctor may recommend it when the diet, exercise or medications have failed to help in reducing your weight. It is usually advised to people with a BMI of 40 or more, and also in cases where the BMI lies between 35 to 39 and they are suffering from obesity along with other associated health conditions such as: