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However, after five weeks of abstinence, frontal and parietal gray matter perfusion of the non-smoking ALC patients recovered to normal control levels, whereas the smoking ALC group essentially showed no recovery. Further, the number of cigarettes smoked per day was negatively correlated with frontal gray matter perfusion measured at 5 weeks of abstinence

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Nicotine exposure during periods of significant brain development, such as adolescence, can disrupt the growth of brain circuits that control attention, learning, and susceptibility to addiction

George Gay is Tobacco Reporters European editor, but his territory spans the globe