I had surgery on 10/15. I'm down 51lbs! 21 prior to surgery and 30 since. HW421 SW400 CW370. I haven't really felt a huge difference yet, because my weight is still very high. It will take a lot before I begin to really feel the effects. I've had more good days than bad as I am still trying to figure out what I can eat and how much I can eat. I have every confidence this is going to work and I am going to get to my goal of being under 200 pounds. It does take a while to figure everything out! It's definitely a life changing experience but it's a change for the better.