i've mentioned the other possible mechanism of action, which definately seems more plausible - to me anyway.
Unfortunately, the "low level pathogen" suggestion doesn't fly either. The OP was complaining of hayfever. As far as I remember that's caused by a certain type of antibody (IgE) binding the pollen and causing some cells of your immune system to activate and release inflammatory mediators and histamines (that's what hayfever treatments contain anti-histamines). If you just introduce more of the pollen then you'll get more of a reaction. If you give them something that is different but gives the same symptoms it'll....give the same symptoms. Assuming it hasn't been diluted out.
please explain then, in all honesty im by no means a biologist but i was under the impression the whole reason a body reacts to an illness and creates antibodies is due to a significant level of viruses etc that are present
