The notion that weed and schizophrenia are somehow related is by now a “water is wet” kind of non-statement. Scientists have been telling us for years that bongs aren’t good for the brain, and that heavy cannabis use—especially among adolescents—increases the risk of developing a psychotic disorder. But new research indicates our understanding of the relationship might have been one-sided. Because schizophrenia, in fact, may be contributing to your desire to get high. A study, published in Nature Neuroscience, states from the outset that “Cannabis use is a heritable trait that has been associated with adverse mental health outcomes.” (See also: Scientists identify 35 genes associated with cannabis use)