No. I think the reason weed causes paranoia in people is simply because it is against the law, and when people do illegal shit they sometimes get paranoid that they're gonna get caught. I don't get paranoid unless I think there's a reason I might get caught, in which case I think the paranoia is entirely rational and might be better termed "freaked the fuck out by the armed thugs who roam the streets and have an obsession with stealing cannabis and locking up possessors of cannabis in cages".