Genes, brain chemistry may dictate nicotine cravings, study says

Individual brain chemistry and genes could be key to understanding why some people become addicted to nicotine and why the chemical compound's effects appear to diminish at night, University of Colorado at Boulder researchers say.

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<p><a href="http://www.physorg.com/news113568645.html">Genes, brain chemistry may dictate nicotine cravings, study says</a></p> <p>Individual brain chemistry and genes could be key to understanding why some people become addicted to nicotine and why the chemical compound's effects appear to diminish at night, University of Colorado at Boulder researchers say.</p>