Psychiatric Patients who chronically use cannabis are 2.44 times more likely to display violent behaviors. Persistent cannabis use should therefore be considered as an indicator of future violent behaviour in patients who leave a psychiatric hospital for follow-up in an outpatient clinic, although the researcher points out that this behaviour tends to fade with time. https://www.frontiersin.org/articles/10.3389/fpsyt.2017.00176/full…