I haven't, but my sister has and so has an online friend. Neither have ever expressed any regret that I know of, and their surgeries went well. Both lost a lot of weight. My sister's diabetes type 2 is now so well controlled that she no longer takes medication for it. She just monitors it. That's great!

I'm not sure about my online friend, but realize that though my sister lost a lot of weight that she is not skinny. In fact, she still weighs more than me and I'm about 14 lbs overweight. The issue, I think, is that though she changed her diet drastically just before and for a while after the surgery, she returned to some of her old eating habits eventually. She's therefore gained some weight back, though far from all of it. Maybe she doesn't eat as much as in the past, but it is now again what she eats. I've observed the same situation in some celebraties who had weight loss surgery.

I mention the above only to emphasize that though such procedures can be very beneficial in major ways, they aren't a way to lose weight and keep it off without long-term changes in one's diet. I think such surgeries should be very well thought out after having truly tried hard at losing weight through healthy traditional methods and learning what healthy eating is all about. Many people I've encountered over the years, including my mother, were able to lose large amounts of weight like 75 lbs and even well over 100 lbs without such surgeries. It is rarely ever easy. I know how difficult it can be to stick with a diet myself. But one should really process such a decision seriously. In addition to doctors, I believe my sister did need to have some therapy on the issue (and perhaps even see a dietitian) before her surgery.

I've been successful with dieting in the past, but when I've reached my goals have slipped back into excessive and unhealthy eating again. It's so common! I know this time around I must really commit to a new eating lifestyle (that will include work and mindfulness).