Adolescents and young adults living in states with more liberal policies reported higher average rates of cannabis use but significantly lower rates of cannabis use disorder (abuse or dependence) than those in states with more conservative policies, even when controlling for medical cannabis laws.

See the source article by following the link below:
Adolescents and young adults living in states with more liberal policies reported higher average rates of cannabis use but significantly lower rates of cannabis use disorder (abuse or dependence) than those in states with more conservative policies, even when controlling for medical cannabis laws.