Hi Leah, I have heard people say that some WLS patients have gained their weight back. Well I think that if that is true, sometimes I wonder, that they had to eat very unhealthy foods and be constantly eating! Like if it takes you all day to eat a Whopper, you still ate a Whopper. I always have that in the back of my mind. That doesn't mean that a person can't eat something unhealthy from time to time, but the eating habits as a whole have to change in order to be truly healthy and sucessful for life. Hope this helps some.