I gained 30-35 lbs these past 2 or so years as my knee got worse and harder to walk on. I want to lose all I gained, maybe even 15 or so extra, and since the surgery I have lost approx. 14 lbs already, mostly due to loss of appetite and the flu. As I get more active, the rest will come off as I really don't have any awfully bad eating habits; more a slow metabolism or whatever they call it these days. I know I burn calories at a slower rate than most people. I generally stick to 1400 calories per day, but I'm doing well right now to get 900-1000 calories in me in a day, and often only get 700 in as I eat a few bites and I'm stuffed. It's so hard to lose when you can't move around much and what moving you do is of the slow variety. I used to be a speedy walker, but no one who is bone-on-bone can do that. I hope you can get the surgery, then work hard (after you recover) to lose the extra weight. I know it's no fun to be overweight, and I wish you all the best.