from The Addictive Personality
I think a lot of this is a matter of semantics. Also, if the experts don't know for sure why should we? I would be skeptical of anyone who says they have definitive answers.
Personally, I think that we should look at the substance itself as being inherently addictive, like heroin or nicotine. Some of us may be more predisposed toward seeking substances, for example to help with mental illnesses...
I find the book The Addictive Personality by Craig Nakken useful on this topic.
Do families cause people to become addicts? He quotes another source as saying:
While much research has been conducted and many findings revealed on this issue, we still do not have the final answer.
Alcoholism or alcohol dependence runs strongly in families. A genetic contribution to this familial pattern for alcoholism is best suported [by various studies] all of which demonstrate and increased risk for alcohol-related prolblems in children of alcoholics.
In some cases, children who were adopted and raised without knowldege of the alcohol problems of their biological parents still had much higher rates of alcoholism.
Then Nakken writes:
While these facts suggest a genetic link, they do not yet provide scientific proof. Before that proof can be made, innumerable roadblocks must be removed. First and foremost we need to work with an appropriate definition of alcoholism. In many current studies, alcoholism has been divded into alcohol abuse (harmful use, such as haivng an auto accident under the influence) and alcohol dependence (chronic use). Tracing genetic factors to these two definitions is problematic at best becuase alcohol abuse does not necessarily develop into alcohol dependence.
Another obstacle occurs when we try to determine who in our families was an alcoholic two or three generations back. Sixty or seventy years ago, definitions of alcoholic were only just beginning to be clarified and most alcoholics denied they had a problem.
Still another barrier occurs when scientists try to pinpoint hose specific genes that increase one's risk aof alcoholism. Is it one gene acting alone? Ten genes? Twenty? The study of twins with alcoholic parents does not show a 100 percent correlation. One twin may be alcoholic but the other is not. Or neither twin may be alcohol dependent. What does that say about the influence of genes?
However, while the role of genes is difficult to prove scientfically, statistically their role seems obvious...
There's more if you want to read the book.
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