Electronic cigarettes: A safe substitute? New Scientist 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. The hidden fire risks of vaping and e cigarettes: what you need to know E Cigarettes: Know the Health Risks Department of Health E Cigarettes Fact Sheet Center for Public Health and Tobacco Policy Health effects of electronic cigarettes Wikipedia