headaches and tanin related?

[Thomas]

Sorry, I was under the impression that histamine is in the blood, a chemical that reacts to a perceived threat; or is it both in the blood and in some foods, or is it in the blood because of some foods? Where do the histamines come from that attack us when we have a common cold?

I suppose I need more enlightenment on this one.

[This message has been edited by foodie (edited 08-03-2002).]