Faster Nicotine Accumulation Doesn't Explain Tobacco Addiction

Traditionally, scientists believed that nicotine inhaled in a puff of cigarette smoke took a mere seven seconds to be taken up by the brain, but new evidence indicates that nicotine takes much longer to reach peak levels in the brains of cigarette smokers, according to a new study in PNAS. Using PET imaging, Duke investigators found for the first time that cigarette smokers actually experience a steady rise of brain nicotine levels during the course of smoking a whole cigarette. read more

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