I have allergies and I tried the no dairy thing, been there, done that, and it made absolutely no difference in my symptoms. I learned in geography class that 3/4 of the world is lactose intolerant. The exception is people of Nordic decent (Scandinavia). Lactose intolerance is almost unheard of there. The theory is they evolved to be able to drink milk because of their climate as it is hard to get certain nutrients elsewhere. Anyway, as it turns out, I am of Norweigan decent, so perhaps that is why the no dairy thing didn't help me.