Ah yes, I was diverging from the allergy discussion somewhat. Simply that people will speak about an allergy to certain things, which as you stated, aren't immunologically mediated but are rather, neurologically mediated. This of course triggered in my forever wandering brain, research I read recently on a correlative (not necessarily causative) link between the immune system and autism, a neurological disorder. The next few years will be an exciting time for neuro-immunologists.

As a side note, I googled antibodies to caffeine and it's actually an area of research. Apparently llama's produce a heat-stable antibody to caffeine which can be used to detect caffeine in coffee/tea.

Last edited by Dazed&Confuzed; 06/19/08 07:41 PM.