I have just purchased a copy of this book which recently has received much publicity with The Huffington Post heralding this work and purporting it reveals the likely cause of addiction.

http://www.huffingtonpost.com/johann-hari/the-real-cause-of-addicti_b_6506936.html

I will be reviewing it in the next few weeks.

In the mean time the author  Johann Hari’s correspondence with Peter Hitchens, a commentator on addiction issues.

http://chasingthescream.com/letters-with-peter-hitchens/