Hi everyone, this is my first time on here. I have read some of the other posts and I think this is a great support. I have one more dr appointment left with the pulmonary dr then it goes to my insurance for approval. I know that weight loss before the surgery is required but does anyone know how much weight you need to lose before the surgery and if you don't lose weight do they cancel the surgery? I started this process in February and know that I need to lose some weight before the surgery but it's been very difficult and now that I know that time is getting closer I'm a little worried because I have not lost any weight.