I'd probably lose 10 pounds if I stopped eating chocolate alone.
(I'm even eating chocolate ice cream as I read this thread LOL.)
If it gave you a migraine headache that lasted from 12 to 20 hours you'd quit eating it. I didn't know what caused it until I had allergy test run. If I ate chocolate at night for dessert the headache wouldn't start until about 4am. what a rotten way to wake up.