If I cut out all the sugar and all the refined flour from my diet, and drink only water and no other drinks (no coffee, no diet soda, no unsweetened ice tea, no milk, no juice), I lose weight.
I also get splitting headaches, fatigue, anxiety, and have to go to the bathroom twice as many times per day.
I still do it anyway sometimes but it’s not fun. If I truly wanted to lose a lot of weight, I’d have to keep that up for months and probably exercise an hour a day on top of it.
Nothing else works.