The title is incorrect. It implies a causal effect, where the article suggests correlation. Also, it refers to a cannabis use disorder, not cannabis use (as men

The title is incorrect. It implies a causal effect, where the article suggests correlation. Also, it refers to a cannabis use disorder, not cannabis use (as mentioned by others). I propose: "Cannabis use disorder correlated to increased risk of both psychotic and non-psychotic unipolar depression and bipolar disorder." Or even: "People with major depression, bipolar disorder and psychosis are more likely to be addicted to cannabis."