Use of e-cigarettes by middle- and high-school students tripled from 2013 to 2014, according to data released by the federal government on Thursday, moving the percentage of high-school students who use them higher than those who smoke traditional cigarettes.
In terms of the number of students using the devices, that increased from about 660,000 two years ago to 2 million in 2014. E-cigarettes are most popular among black and Hispanic teenagers, the CDC found.
Health experts fear the statistics, based on an annual survey of 22,000 students around the country, could reverse decades of progress fighting tobacco use. They blame aggressive marketing by e-cigarette companies for the sharp increase.