Does chronic marijuana use cause paranoia?
No. There is no evidence that chronic marijuana use causes paranoia. There are reports from some people that they experience paranoia during individual uses, but the effects do not last beyond the time that the drug is effective on them. It is not clear how much of that temporary paranoia is actually due to the effects of the drug, and how much is due to the fact that it is illegal and people are reacting to the fear of getting caught.
