Should a Ten Year Old Drink Coffee?

Don't blame me, I don't ask the questions, I just answer them :).Recently over Twitter, I was asked in jest (I hope) by a ten-year old whether or not it was too early in his life to start drinking coffee.  At first, it just made me laugh.  Then, I realized that in answering the question there was a great opportunity to go back to basics on coffee consumption and caffeine.I myself only started drinking coffee at around 16 years old, but what would happen if you started giving coffee to a ten-year old?  I'm no biologist, or really an "ologist" of any kind.  But we have enough common sense about caffeine and the rest of the information is out there.  Here's what I learned.