Journalist and author Michael Pollan talks about his book, How to Change Your Mind, with EconTalk host Russ Roberts. Pollan chronicles the history of the use of psychedelic drugs, particularly LSD and psilocybin, to treat addiction, depression and anxiety. He discusses his own experiences with the drugs as well. Much of the conversation focuses on what we might learn from psychedelic drugs about their apparent spiritual dimension, the nature of consciousness, and the nature of the mind.