Health effects and known pathology associated with the use of E cigarettes ScienceDirect Vaping and E Cigarettes ADAPP Global youth vaping and respiratory health: epidemiology, interventions, and policies npj Primary Care Respiratory Medicine 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. The Effects of E cigarettes on Oral Health FDI