I just finished reading his book, The Second Brain, and it was a revelation! For years I have been telling my therapist that my gut has a mind of it's own and that after decades of therapy, anti-anxiety and depression drugs, meditation, prayer, exercise, diet, naturopathy, yoga, etc., etc., my belly STILL does whatever the heck it wants to! So much for the notion that it all starts in the head. This books PROVES that, because the colon can do it's thing even when a body is brain dead or paralyzed, it MUST have it's own brain. I loved this book! I want to give a copy to every physician I've seen in the last 25 years who loaded me up with "nerve" pills for a problem in my gut!