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Pack-years summarizes the amount of cigarettes a person has smoked over a lifetime, e.g., 1 pack-years is equal to smoking a pack (20 manufactured cigarettes) per day for one year

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It's why the company is focusing so much attention on its new categories division

While its not the primary cause of diseases associated with smoking (such as lung cancer, emphysema, or cardiovascular disease), nicotine does have various health effects on its own: Nicotine is highly addictive

Nicotine has been demonstrated to affect the structure of nAChRs in esophageal keratinocyte culturing by dislodging the regional neurotransmitter Ach