E cigarettes: facts, stats and policy recommendations Year in review: Risks of e cigarettes emerge Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. E cigarettes: Facts, stats and regulations Poisoning Calls About E Cigarettes Campaign for Tobacco Free Kids New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking