First e cigarette authorized in the U.S., FDA cites benefit for smokers National Globalnews.ca Vapers losing their Juul e cigarettes after FDA ban al.com E Cigarette How E Cigarettes Work, Health Risks & Teen Use Nonnicotine vapes may be marketed as safe, but many still contain chemicals, have unknown health effects, and aren't FDAregulated. Teens are using them more ofteneven alongside nicotine vapes. No ecigarette is riskfree. E Cigarettes