Unfortunately the article does not explain how the study establishes causation. >"Compared to non-users, regular cannabis users were more likely to engage in h

Unfortunately the article does not explain how the study establishes causation. >"Compared to non-users, regular cannabis users were more likely to engage in high-risk alcohol consumption, smoke tobacco, use other illicit drugs and not be in a relationship at age 35," Dr. Chan said. That there is some correlation seems obvious and unsurprising. After all, if cannabis use is presented as somewhat risky in the media and by laws then only people who are comfortable with that risk, either by temperament or because they have little to lose, will use it.