Two million high school students admitted to using e-cigarettes in 2014 . That is an increase of 9 per cent from the 660,000 recorded in 2013 . Traditional cigarette use has plummeted by 13 per cent , CDC study shows . Experts warn e-cigarette marketing is not regulated .
Two million high school students admitted to using e-cigarettes in 2014 . That is an increase of 13 per cent from the 660,000 recorded in 2013 . Traditional cigarette use has plummeted by 9 per cent , CDC study shows . Experts warn e-cigarette marketing is not regulated .