Although it's a B way to do it I can recommend a double knee op to lose weight!
Last October I was hovering around 17 stone but after my first knee replacement I didn't feel like eating much and couldn't get to the Hockham Eagle lunch and evening times. I gave up cooked breakfasts and suppers and now have one cooked (teatime) meal a day.
3 months later and my second knee op (far too soon, by the way) continued this all again. I've now been a steady 14 stone 7 lbs for the last 2-3 months!
I recently found a box of folded clothes I put away many, many years ago... now I've got a new wardrobe!
(BTW, I'm 6ft 2ins)