There were no safety concerns in smokers who used e-cigarettes in a 2-year clinical trial. Vaping was associated with a reduction in cigarette consumption and a reduced exposure to cigarette smoke constituents, with no increase in body weight.

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There were no safety concerns in smokers who used e-cigarettes in a 2-year clinical trial. Vaping was associated with a reduction in cigarette consumption and a reduced exposure to cigarette smoke constituents, with no increase in body weight.