Gastric Bypass Surgery - What Can It Do For You? Some people have gastric bypass surgery and shed 100 pounds or more. What can this surgery do for you?To answer this question, you will first need to know what gastric bypass surgery is and how it helps you lose weight.A gastric bypass surgery also known as Roux en-Y surgery is a medical procedure that reduces the size of your stomach causing you to feel full when you have eaten only a small...... Similar Editorial : Gastric Bypass Surgery by hep2djive. | Source : Asthma Drug Treatment