Nearly 2 million U.S. adult nonsmokers vape

A study highlights concerns that e-cigs, marketed as a way to stop smoking, may be addictive

person vaping

E-CIGARETTES ONLY  Of the estimated 1.9 million American adults who vape but have never consistently smoked regular cigarettes, the majority were aged 18 to 24 years.

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Nearly 2 million U.S. adults who have never consistently smoked traditional cigarettes use e-cigarettes, according to results from a national survey.