Chocolate’s Sweet Science  Forget poets and philosophers.
Scientists, studying the chemistry of the heart, are the ones
who can explain our obsession with chocolate. We crave chocolate
when we’re feeling blue, they tell us, because it contains
phenylethylamine, a chemical that may raise endorphin levels in
the brain. Other cocoa chemicals, such as theobromine and
caffeine, are believed to increase alertness. And anandamide
reportedly stimulates the cannabinoid receptors in the brain,
making us “feel good.”  You probably won’t notice a difference
after a bite or two, however. According to the National
Institute of Mental Health, a 130-pound person would have to eat
25 pounds of chocolate in one sitting to get any mind-altering
effect.  What other health benefits might come in a heart-shaped
box? Take this quiz to find out.  True or false? Chocolate
reduces heart disease risk.  True or false? Chocolate triggers
migraine headaches and breakouts.  True or false? Milk chocolate
is better for your heart than dark c