I have not lost weight doing "just" intermittent fasting, but it does help me with doing calorie control, etc. so it is a great tool for weight maintenance and to add to a weight loss regimen. The main thing that intermittent fasting has done for me is pretty much totally clearing up my stomach issues. Gut rest has been magical in my case. While I never plan to do once a day eating or anything else I consider overkill, I LOVE doing an 8 hour eating window. Basically I skip breakfast, eat at noon and don't eat past 8 pm. During those hours I eat whatever I want and watch or don't watch my calories according to my own whims. When I am trying to lose weight it's much easier now because of the shorter eating window. When I'm not really watching my food intake, I still generally maintain because of the smaller eating window.
Admittedly, I've some periods of high stress in the past year where even with intermittent fasting, my bad diet has caused weight gain. I've also had some time periods where I stretch the eating window to 10 - 12 hours and I definitely take in more calories when I do.
The reason I started Intermittent fasting was as one prong of a dementia prevention strategy I read about somewhere. 1. exercise 2. brain challenging tasks 3. good "sleep hygiene" 4. Mediteranean style Diet 5. Intermittent fasting. Time will tell if I avoid dementia, but when I am consistent with all of the above I do feel better all around and keep my weight under control. Looking at this now I'm realizing the reason I'm struggling might be that I've loosened up on a few of (well, basically all of...) those prongs! Time to get back to better habits.