I had gastric bypass 12 years ago , lost 200. But I gain all back. I did the stomach swchering 2 years ago in UCLA and lost 60 lbs , and I am going to do the Distal gastric bypass now. I had the class before the surgery yesterday, and lost 27 lbs with diet. He wants me to lose 35-45 lbs before the surgery. The readjustment to pouch didn't last that long , and it opened up again.