smoking 1 pack of cigarettes a day Single cigarette takes 20 minutes off life expectancy, study finds | Even one cigarette a day
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The authors suggested a need for policies that comprehensively regulate the spectrum of nicotine products used by young people, including disposable e-cigarettes

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In a study of the same participants published in Frontiers in Oral Health , the research team found that clinical attachment loss was significantly worse only in the e-cigarette smokers -- not non-smokers and cigarette smokers -- after six months

The pack arrays shown were the same as those shown for the descriptor matching task described earlier (Figure 1)

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