I do - had an early onset dementia scare. Went Keto and down to one meal a day. I wasn't really overweight to start, and my weight stabilized pretty quickly. I did that for about two years, and lately it seems like I don't need to be as strict with the keto, but still one meal a day. I also am not overly uptight about it - if I'm on vacation, and I want to have a small lunch too with other people, I'll do that.