Yeah.. I've noticed that the more healthily I eat, the worse the reaction when I eat a bunch of junk. Or even not junk, I just am aware of small reactions for certain foods. I think it's just that when you're "used" to eating junk you have a low level reaction going on all the time that is not noticable. Like living in a city, there is a dull roar of noise and of light pollution that never goes away but you don't notice it at all, it's doesn't bother you. However, if you go out to the country for a while.. and get used to silence, dark skies and stars - suddenly the city seems extremely loud and intrusive/offensive. It hasn't changed, your perceptions have.