New data show nearly 800,000 teens vaped for the first time in the past year, as FDA is set to announce first major decision to remove a popular e cigarette brand E cigarettes: How they work, risks, and research Vape shops take Utah health department to court over ban on flavored e cigarettes Report finds 'disturbing failure' to stop underage smoking, vaping in U.S. The majority of e cigarettes on the market are illegal