Possibly one of the links between mental disorders and marijuana is that many people with anxiety issues have better relief from marijuana and far less side effect than they do from pharmaceutical drugs. How often do you see adds on TV for just antidepressants that the side effect are far worse than what you are trying to treat. Some of the side effects of most antidepressants have is worsening condition, or how about increased suicidal thoughts, increased nervelessness and anxiety. Marijuana is more likely to mellow you out and give you the munchies and reduce anxiety than anything else. Don't you think that people over the age of 50 who have a high-school education and make less than 20K have a lot of anxiety, fairly hard to feed house and cloth yourself on that.  The Alcohol consumption is a different story much more destructive to your health, personal life and society as a whole.