This is highly misleading. For example, you forget to mention that ‘Colorado Department of Public Health and Environment says cannabis consumption by teenagers in the state “has not changed since legalization either in terms of the number of people using or the frequency of use among users.” That conclusion is based on data from NSDUH and the Healthy Kids Colorado Survey, which has a much larger sample of Colorado teenagers.’ https://reason.com/archives/2017/04/20/does-legalization-boost-teen-m Also, this: “Survey data released today indicate that teenagers were less likely to smoke pot last year than at any point since 2002, despite the message supposedly sent by the relaxation of marijuana laws during that period.” https://reason.com/blog/2017/09/07/despite-legalization-adolescent-marijuan As for the increase in hospitalizations, it could easily be the result of people experiencing a bad high (getting paranoid and all) being more willing to seek help now that it’s legal, whereas before, they’d tough it out on their own. As for long-term problems like anxiety and depression, you haven’t established causation at all. It could be the other way around just as easily: People with problems could be more likely to smoke more as a way to “escape” (or at least try to). The “gateway theory” has long since been debunked and I am surprised you are even bringing it up. The great majority of pot smokers don’t go on to hard drugs like heroin. But even with hard drugs, it’s not black and white. For example, ‘ https://reason.com/blog/2017/08/16/heroin-death-rate-rises-among-teenagers ‘The CDC reports that the rate of heroin-related deaths among 15-to-19-year-olds tripled between 1999 and 2015, rising from 0.3 to 1 per 100,000. Yet during the same period, according to the Monitoring the Future Study, the incidence of heroin use among 10th- and 12th-graders fell by 64 percent and 55 percent, respectively. By 2015 teenagers were much less likely to use heroin and much more likely to die as a result of using heroin.’ So contrary to the expectations of many, a decrease in heroin users is actually not leading to a decrease in deaths. Overall, very sloppy article. Disappointing.