Sugar free sweetness SHOULD be avoided. That said, you need to pick your battles. If having sugar free sweetened drinks helps navigate the fast, then so be it. Manage the diabetes, weight, or other more pressing issues, and tackle things like Whole Foods rather than processed and artificial sweeteners in turn.
If you try to start out doing everything the chances of long term success are diminished. Take an evolving approach and chances of success are enhanced.
My reverse-engineered answer is “yes”. My body is fast-adjusted, and I do not normally consume “zero” drinks. However there was one occasion recently where I had a Diet Coke and felt terrible —heartburn, stomach ache, etc., and that’s a sign to me that something isn’t super IF compatible.
Since getting into IF I have come to view my digestive system as a muscle, and base how I eat on whether or not it’s “causing injury or pain” to the muscle, as opposed to caloric content. Starchy carbs, sugar, processed foods and alcohol also cause a similar effect. I don’t know about the science of zero drinks, but I would guess they break fast based on how they feel to consume in a fast-adjusted state.
I starting today to intermittent fasting (omad) I drink coffee and plan to buy diet coke (coke zero) when I go to the store.Coke zero don’t have calories And addicted to coffee. I drink by coffee with Splenda.
My goal is to lose 20 kg. I am at 90 kg now want to get to 70
I can’t live without my coffee
Black coffe, black tea and water if you truely wish to intermittent fast.
You can certainly drink these but then you are just skipping meals, which isn’t a bad thing, after all its all about CICO - but if you are drinking anything else you are not IF.
Do what works best for you. I drink water with zero calorie enhancers like Mio and I’m doing just fine. I love Gatorade Propel as a every once in a while thing which is also zero calories. I love herbal and green teas with a little zero calorie Stevia that doesn’t break s fast. Diet Soda is still soda at the end of the day so I avoid it completely lol. Gatekeepers will tell you to drink ONLY plain water and black coffee for all eternity and you’ll burn yourself out from misery 😄