E cigarettes and health here's what the evidence actually says Vox E Cigarettes Public Health Law Center E cigarette Myths Go Up In Smoke St. George Medical Clinic Tobacco & E Cigarettes 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.