title: Notes from the field: electronic cigarette use among middle and high school students - United States, 2011-2012.
abstract: Electronic cigarettes, or e-cigarettes, are battery-powered devices that provide doses of nicotine and other additives to the user in an aerosol. Depending on the brand, e-cigarette cartridges typically contain nicotine, a component to produce the aerosol (e.g., propylene glycol or glycerol), and flavorings (e.g., fruit, mint, or chocolate). Potentially harmful constituents also have been documented in some e-cigarette cartridges, including irritants, genotoxins, and animal carcinogens. E-cigarettes that are not marketed for therapeutic purposes are currently unregulated by the Food and Drug Administration, and in most states there are no restrictions on the sale of e-cigarettes to minors. Use of e-cigarettes has increased among U.S. adult current and former smokers in recent years; however, the extent of use among youths is uncertain.
mesh_terms: D000293:Adolescent; D002648:Child; D003430:Cross-Sectional Studies; D055615:Electrical Equipment and Supplies / Q000706:statistics & numerical data*; D006801:Humans; D013334:Students / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D062789:Tobacco Products / Q000706:statistics & numerical data*; D014481:United States