I agree that the choice of self-medication might have some genetic relationship to that of the parents because what works for them might also work for the offspring, but the reason for needing self-medication has a lot more to do with overwhelming experiences in very early childhood and the lack of models for how to cope with them. I have a sense that something very complex is being reduced to an overly simplistic model. Also where does nicotine exposure come in, both prenatally (passive and active) and growing up. Are you counting nicotine use in the model?
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