(NEWSER) – The number of teenagers who at least tried an electronic cigarette doubled last year, with one in 10 doing so, according to new figures from the CDC. "This is really taking off among kids," the CDC's director tells theNew York Times. Middle schools saw a jump, too, with usage increasing from 1.4% to 2.7%. In many places, it's even legal. Though two dozen states have moved to ban the sale of e-cigarettes to minors, the rest haven't, and the FDA is still considering how to regulate them, the Wall Street Journal reports.