QUESTION: Low-Blood-Sugar Headache

ANSWER: You skipped a meal or didn't eat enough, and the result is an easy-to-trace headache. Take an over-the-counter medication and eat something. Of course, even gobbling down food won't necessarily stop the chain reaction that has already been set in motion. Make sure that you don't skip your next meal. Throwing off your body's fuel clock by skipping meals is never a good thing for a migraine-sensitive system like yours.