The results were reported as follows: "Increased duration of e-cigarette use was associated with fewer cigarettes smoked per day and differing patterns of dependence to e-cigarettes contingent upon smoking history. Additionally, increased duration of e-cigarette use was associated with increased frequency of use; however, this finding became nonsignificant when current tobacco cigarette use was accounted for, suggesting that individuals may increase e-cigarette use frequency as they decrease cigarette use. Overall, e-cigarette users tended to decrease the strength of nicotine in their e-cigarette products regardless of duration of use."

The rest of the story is that new data from the CDC itself show that the smoking rate among U.S. high school students dropped significantly in 2013, reaching the (the Youth Risk Behavior Survey), which began in 1991.

LAST：new arrival mose mod ecigator and ecig exgo made in china alibaba |NEXT：Stock offer akuma mod clone hot selling red copper akuma mod