Marijuana has for some time been assumed to be a gateway drug: one puff and it’s only a matter of time until you’re shooting heroine. This does not seem to be the case. What about other drugs? What about this orange powder that Jeff is snorting? What about prescription pain pills like Oxycontin? How do you know if they are gateway drugs? If they are, how do you convince the user of the dangers of escalation? How do you intervene?
