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Tobacco addiction profoundly affects the brains reward system and neurotransmitter activity

As his teacher discussed the past nights reading, Kenny reached down and slowly unzipped the top pocket of his backpack, revealing a small cylindrical tin labeled ZYN. After waiting a few seconds to make sure no one had noticed, he twisted the lid off and popped a small white pouch into his mouth

A key driver of addiction is the short span between a drugs intake and its effects on the brain, Kruse said

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Our findings were also consistent with those of a previous meta-analysis concluding that in utero tobacco exposure may induce COPD in adulthood [36]