Thank you - I have read plenty about the physical impact of alcohol and drugs on the brain. I agree that it has an impact yet I cannot escape the fact that there more often than not a common denominator in the type of childhood that is experienced. They go hand in hand. Not all abused children become addicts but also not all children of alcohilics become addicts themselves. There is much we do not know and to dismiss one possible factor at this stage of knowledge seems remiss. Would that it were so simple.....