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E-cigarettes don't contain the thousands of other chemicals – many of them cancer-causing – found in regular cigarettes, but they do contain nicotine, the substance responsible for causing addiction to tobacco products, as well as other chemicals, including flavorings.
Why should we be concerned? Because more young people are now using e-cigarettes compared to any other tobacco product, including conventional cigarettes. Recently, the U.S. Centers for Disease Control and Prevention reported that from 2013 and 2014 – just one year – current e-cigarette use among middle school and high school students tripled. Current e-cigarette use (use on at least one day in the past 30 days) among high school students rose from 4.5 percent in 2013 to 13.4 percent in 2014 – that's an increase from approximately 660,000 to 2 million students. Experts worry that e-cigarette use will contribute to a new generation of young people becoming dependent on nicotine.
Lithium batteries are dangerous goods, much like gasoline, propane, and sulfuric acid.