I thought I should share this with you guys. I am currently reading "Making Sense of IBS" and I am about 70 pages into the book. It is for lay persons and has a lot of interesting and useful info like causes, treatments available etc. Best of all, it does not say that things are always in the head. IMHO, a good read at just $16.
http://www.amazon.co.../dp/1421411156/
http://www.amazon.co.../dp/1421411156/