When nicotine in cigarette smoke interacts with nitrous acid, a common molecule in indoor (and outdoor) air, it leaves behind a residue of three compounds, two of which (known by the acronyms NNK and NNN) are known carcinogens
Back in February, when CVS announced its plans to get rid of cigarettes, Goldman Sachs tracked the Zip Codes where CVS operates stores, figured out which areas were also home to Family Dollar or Dollar General stores, and used the information about the overlap to estimate how the dollar-store chains might benefit as customers turn to them for cigarettes
Anti-smoking advocates would like to see the same marketing limits applied to e-cigarettes that apply to so-called combustible cigarettes, including banning them from advertising on TV and radio
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