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 risk free. Say No to Vaping Central Coast Health Promotion Service E Cigarettes and Lung Health American Lung Association Lung cancer risks persist with e cigarette use after quitting tobacco smoking E cigarettes & Vaping Positive Choices E Cigarettes and Associated Health Risks: An Update on Cancer Potential