Yep. I had an unbelievable sweet tooth since I was a teenager. I was having 10+ cans of coke per day on top of multiple king size candy bars. When I was ~30 I did a 36 hour fast and afterwards has 0 desire to have anything sweet for the very first time in my adult life.

It came back a few weeks later, but over a few years I tried fasting again and it would go away every single time. Now I try to avoid sweets as much as I can but when old habits creep back in I just have a fast and it goes away.

I don't really fast for any reason other than knowing it will take the sweet tooth away—and generally make me want to eat healthier.