The Science of Drug Addiction
I ran across this report from the NIDA (National Institute of Drug Abuse) and thought it was kind of interesting. It doesn't really take any sides about anything, just offers some reasonable explanations for some questions about addiction, treatment, recovery, how the brain works, etc. It's easy reading and thought some of us might enjoy the information. God bless. 
www.drugabuse.gov/scienceofaddiction/sciofaddiction.pdf
I am not a dr. My statements are based on years of experience and related education. Consult with the professional of your choice regarding matters of concern.