It's really very difficult to untangle, because there's a huge overlap between the known risk factors for schizophrenia and the known risk factors for early and

It's really very difficult to untangle, because there's a huge overlap between the known risk factors for schizophrenia and the known risk factors for early and heavy use of cannabis. The best guess based on the available data is that there's a brutal statistical double-whammy - people at risk of psychosis are much more likely to use cannabis heavily [i]and[/i] are more vulnerable to the effects of cannabis. https://sci-hub.ee/10.1016/j.ajp.2013.03.012 https://sci-hub.ee/10.1016/j.ajp.2013.03.012