I'm glad this works for you but this is far from a universal solution. It's true that thirst is often mistaken for hunger and in those cases this can work. Per

I'm glad this works for you but this is far from a universal solution. It's true that thirst is often mistaken for hunger and in those cases this can work. Personally when I wake up I quickly need a meal – I always drink a glass of water in the morning and it does very little, but if I have a black coffee the caffeine gets rid of my hunger for a few hours.