E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA Vaping and E Cigarettes ADAPP What is e Cigarette and Associated Health Risks IntechOpen New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking 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, Safe Smoke TechKnow