Today, the Marijuana Policy Project released an updated version of the Teen Use Report, which analyzes all available data from medical marijuana states both before and after passing their medical marijuana laws. The purpose behind this was to find out if permitting patients to use their medicine “sends the wrong message” to teens, as prohibitionists are so quick to claim. Well, it turns out that it doesn’t. In fact, of the 13 states with available data, teen use rates have stayed the same or decreased…