Originally Posted by A.Nonymous
I would lay odds (and I bet there are studies on it) that legalizing marijuana for medicinal use correlates with an increase in usage. It's too early to see results from Colorado's recent legalization of marijuana, but I'd lay odds that in the real world usage goes up as well.
I would say that usage would stay relatively flat, as those who did not use it would not all of a sudden think "let's get high.". Actual acknowledged usage may increase, but there are and always will be people who deceive due to perceived image or status.