I get the headaches, too, when trying to quit. I just read that coffee constricts blood vessels, and that when you quit the vessels return to their origin flow capacity, and the extra blood to the brain causes the temporary headaches.
> I am very moderate now though, usually a cup
> or two a day, usually more like one than
> two. The one I drink at home sometime makes
> me sick, as we drink it the French way, very
> strong, almost no milk and certainly no
> sugar...
> I noticed when I stopped all of a sudden,
> that I was suddenly taken with strong
> headaches.
> Another substitute is the cereal coffee, but
> not all kinds taste good!