When self medication fails

Who knows, it may have flaws of some kind, but still, this study puts a bit of a hole in the argument that cannabis users (or at least, those with mental illness) just relax and chill out as a result of using it:

The research by Dr. Alexandre Dumais (MD, PhD, FRCPC, psychiatrist at the Institut Philippe Pinel) and Dr. Stéphane Potvin (PhD, professor at the Université de Montréal), which studied 1,136 patients (from 18 to 40 years of age) with mental illnesses who had been seen five times during the year after discharge, took into account substance use and the onset of violent behaviour.

Previous research has already shown that a cannabis use disorder is associated with violent behaviour. According to this new study published in Frontiers in Psychiatry, users who reported at each follow-up visit that they continued to smoke cannabis presented an increased risk (+144%) of violent behaviour.

These results also confirm the detrimental role of chronic cannabis use in patients with mental illness. According to the principal researcher Alexandre Dumais (MD, PhD, FRCPC): "an interesting feature of our results is that the association between persistent cannabis use and violence is stronger than that associated with alcohol or cocaine."

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.

"This decrease could be explained by better adherence to treatment (the patient becomes more involved in their treatment over time) and by better support from their entourage. Even though we observed that violent behaviour tended to decrease during follow-up periods, the association remained statistically significant," noted Dr. Dumais.