Cannabis use disorder: The policy climate matters

1/23/19–Adolescents and young adults living in states with more liberal policies reported higher average rates of past-year marijuana use than those in states with more conservative policies, according to a new study conducted at Columbia University Mailman School of Public Health. However, the rates of marijuana use disorder — abuse or dependence on the drug — were significantly lower in states with more liberal policies compared to states with more conservative policies. Read