Yes. Though what constitutes a drastic change is a bit subjective, but I’ve made great progress without any specific restrictions. I still eat all the same things I did before, but just less, more infrequent, etc as needed for certain things.
I was also a pretty bad snacker, so even just cutting a meal and having the structure of IF to help control my snacking was was a major difference for me.
Yes, I lost 30 lb in six months without changing my diet although I always ate fairly healthy. I plateaued about 20 lb from my goal weight and now I am finding it necessary to be more mindful to keep losing.
All these replies are so encouraging. This is what I’m doing too. 16:8 without huge restrictions - makes it easier to stick to the fasting that way, for me. I don’t eat horribly anyway, and this is making me a bit more mindful. Haven’t really lost weight in the first 10 days but going to stick with it for longer, as I just have 5kg to lose so maybe this takes longer. Right now I’d be thrilled with a 3kg loss. I’m finding it has cut my night time snacking, so that’s a real plus. Good luck!