Plus, if you're going to self-medicate by building a psychological addiction, there are worse substances to do it with than nicotine. I know many alcoholics, for example, who picked up tobacco in rehab. It might not be healthy, but it can be a bit less self-destructive to your personal life.

Well, tobacco smoke is full of MAO inhibitors. I would not be surprised if it was daily abuse of tobacco and coffee that were causing mental illness.

I think it’s an acetylcholine agonist or something like that.