Psychiatry.org E Cigarettes and Vaping Dure vie rsistance cigarette lectronique Guide 2026 Combien de temps dure une cigarette lectronique ? Vaping likely has dangers that could take years for scientists to even know about U.S. retail sales data show 86% of e cigarette sales are for illegal products Notes from the Field: Use of Electronic Cigarettes and Any Tobacco Product Among Middle and High School Students United States, 20112018 MMWR