CORRECTION: I'm in a graduate program where I'm reading the DSM V for fun for homework, so I consider myself somewhat of an expert on this....I hate to break it to you, but smoking marijuana actually CAN trigger the onset of schizophrenia! It won't CAUSE schizophrenia in someone who's not already predisposed to the illness, but if you're around the average age of onset, getting high can actually trigger the beginning of the illness. Who knew this godawful movie could actually teach us something?