@NPR, shame on you for promoting anti-free-speech talk. Just as Dr. Oz is allowed to say untrue things on his TV show so long as he doesn't do malpractice, is what the letter from Columbia University is saying. When the audience makes the mistake that they somehow think they're one of his patience when he sells them snake old is the fault of the viewer, not Dr. Oz, nor Columbia University. When was the last time anyone said, "I saw it on TV!" and took it for Gospel? Anyone knows the person who says that is a chold or a fool, or both. I'll tell you what the law says: Caveat Emptor. The buyer should beware.