I feel that in addition to horrible lives, there are biochemical factors that lead to addiction. And I think too, you need to consider what is an addiction (versus unhealthy habits or behaviors) If it were just "nurture" and not "nature" I think I would definitely be an alcoholic. As it is, I can take it or leave it when it comes to drinking. However, when I am over come with emotional issues, I have a tendency to binge eat. Even though for the most part I have a healthy life style, there are those times. I have read a lot about brain chemistry and it seems like the more addictive a person's personality is, the lower certain neurotransmitters are. And certain actions and chemicals increase those low chemicals which lead the body (and brain) to crave the experience or chemical again. We were researching antabuse for my alcoholic fiance and found out about this stuff called naltrexone, for example, that binds to the same receptors in the brain as alcohol, so lessens the cravings for alcohol. So I guess what I am saying is that, while there are times that a crappy background can cause enough stress to "self-medicate" I think there is more to addiction than that.
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