I'm not sure legalization has increased usage in those places, but if it has, it will take more than a few years to see the effects.
I'm not sure legalization has increased usage in those places, but if it has, it will take more than a few years to see the effects.
Prohibition reduced alcohol consumption in the 20s: http://patterico.com/2014/07/28/yes-prohibition-worked-in-te....
(I am not asking this to support prohibition. I support legalization of marijuana).
It might also make it less cool. Teenages might be less likely to smoke if their parents/teachers/etc do (wild guess)
I personally don't understand that, but I guess it's fun to do something rebellious if it's arguably harmless*
*(I realize that I'm using the word "harmless" quite loosely here)
https://www.nih.gov/news-events/news-releases/prevalence-mar...
I couldn't locate much information with some quick googling, but I don't think rates of schizophrenia have doubled in the same time period.
The amount of people reporting increased. It is difficult to tell if actual use increased or if people are just more likely to admit they use it because of decreasing taboos.