E-cigarette marketing reaches more than two-thirds of middle and high school students in the United States, according to a report yesterday - a development that some public health officials argue is prompting more teens to use the devices and threatening decades of progress in combating youth tobacco use.
"It's the Wild West out there when it comes to e-cigarette advertising," said Tom Frieden, director of the Centres for Disease Control and Prevention, which released the data.
"It's no coincidence that as the advertising has skyrocketed, the use of e-cigarettes has skyrocketed."
CDC's findings were drawn from the 2014 National Youth Tobacco Survey, which included a representative sample of more than 22,000 middle and high school students.
Nearly 70 per cent - an estimated 18.3 million students - reported having seen e-cigarette marketing in at least one setting that year, mostly in retail stores, followed by the internet, television, movies, newspapers and magazines.