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Epigenetics and Addiction
The Scientist 2004, 18(15):10
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Epigenetics explains how nongenetic forces can alter generational phenotypes in a heritable manner.[1]
Certain addictions are not 100% heritable yet are still completely genetic in causation. An epigenetic effect via environmental exposure could play a role in addiction and should certainly be studied by behavioral geneticists. It's a valid alternative to psychobabble or conscious, willful decisions made by the addicts.
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