February 11, 2013. What do Vincent Van Gogh, Isaac Newton, Abraham Lincoln, Ernest Hemingway, and Charlie Sheen have in common? â??Heavy metal poisoning,â?? according to Richard Diaz, author of Illness Defined, in a recent radio interview. Renowned actor Charlie Sheen agrees. Since communicating with Diaz, he has had his amalgams removed and is now back on his game.