Your comments on ...

E-cigarette use doubles among US teens: CDC study

Chloe Lamb tries a flavor of E liquid in her electronic cigarette as she shops for a flavor at the Vapor Shark store on September 6, 2013 in Miami, Florida. The number of American teens and preteens smoking electronic cigarettes doubled in 2012 over the y The number of American teens and preteens smoking electronic cigarettes doubled in 2012 over the year before -- a trend US health authorities called "deeply troubling" on Friday.