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by Jtigger on October 15th, 2007
When something cold touches the roof of your mouth, it triggers a cold headache. The cause is a dilation of blood vessels in the head. The dilation may be caused by a nerve center located above the roof of your mouth -- when this nerve center gets cold, it seems to over-react and tries to heat your brain causing the dreaded "brain freeze"..
Therefore, the easy way to avoid "brain freeze" is to keep cold things away from the roof of your mouth!
http://www.bmj.com/cgi/content/full/314/7091/1364
http://www.myslurpeecup.com/brainfreeze.html
http://www.thebrainfreeze.com/
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