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Studies like the one mentioned in the article are pseudoscience because they can't rule out the distinct possibility that what is really going on is that these people who smoke marijuana and later develop psychosis were actually already mentally ill to begin with and started using marijuana as a way to self medicate or get some relief from the misery they were experiencing due to their existing mental illness. There is no question whatsoever among the medical community that people with mental illness tend to gravitate toward alcohol and drug use. Whether marijuana use actually causes people to develop psychosis is still open to debate. If it really was causing so much psychosis, we'd see high instances of psychosis in geographic areas where marijuana use is most prevalent, and correspondingly lower instances of psychosis in geographic areas with low per capita marijuana use. That's not the case though, so the conclusions drawn in this study are suspect.

All of the Dopertarians will be here with pseudoscience to disprove this.

Do you really have the scientific credentials to evaluate this or any other study on this matter?