Why I no longer support legalizing marijuana

A surprising number of scholarly studies in the last 25 years have demonstrated that marijuana use seems to cause an increase in psychoses such as schizophrenia, and somewhat less dramatic mental illnesses such as bipolar disorder.

Let me emphasize: This isn’t just correlation analysis — finding that people with a current mental illness are disproportionately potheads. I am well aware that people with significant mental illness problems tend to “self-medicate” using various psychoactive drugs (including alcohol). No, these are longitudinal studies that show the marijuana use comes first, with the mental illness later in life…

At this point, you may be saying: “Big deal! It’s my life! If I want to smoke pot and risk going crazy, that’s my choice!” I would concede that point, except that as of 2002, schizophrenia alone of the mental disorders was costing the United States $63 billion a year in medical costs and in disability payments. Much of that cost is directly governmental, since schizophrenics usually aren’t able to work and thus are reliant on the government.