Not in at the moment <a href=" http://www.memories-book.co.uk/blog/gummy-bear-lab-report/ ">essay importance of education</a> But not everyone who uses e-cigarettes stops smoking – NJoy's Weiss says that most of his company's customers also use tobacco cigarettes – and some public health researchers worry that vaping may prevent some people from kicking their nicotine habit if it allows them to get their fix in circumstances where they can't smoke. Another concern is that e-cigarettes might be a gateway to traditional cigarettes for kids, getting them hooked on nicotine, Prokhorov says. (A report earlier this month by the Centres for Disease and Control found that use of e-cigarettes among teenagers doubled between 2011 and 2012, with about 1.78 million students having tried them, among whom 160,000 had never used conventional cigarettes.) Finally, people who would never smoke a regular cigarette might take up the habit if they think that electronic cigarettes are safe, says Odum.