I'm wondering how many out there experienced weight loss after surgery. I am almost six weeks post-op and I've lost 18 lbs. since surgery. I have never been overweight. I weighed 162 lbs prior to surgery and now 144 lbs. It seems like most of the loss is coming from muscle mass loss. I know most of it is probably because of low appetite. How long did it take for you to regain your weight?