Humans were not supposed to be grazers...We were supposed to eat, finish eating and then hunt until we caught another beast...
So, logically snacks were not a biological imperative in humans.
Makes sense that we would develop some sort of clensing mechanism that works between meals; who'd'a thought that messing with it would mess with our bacterial balance.
Do not mess with mother-nature.
I am a great faster and have noticed that after about 20hrs my hunger reflex shuts off and I can go a very long time without solids...I did weekly (Thursdays) fasts that set my body up to have a happy and well balanced weekend...whenever I am bloated, insomniac or just off schedule fasting rests all of my buttons.
Sharon