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. Parts of an e cigarette and health effects of trace metals released Download Scientific Diagram What are the respiratory effects of e cigarettes? The BMJ Is Vaping Better Than Smoking? American Heart Association Effects of E Cigarettes on Oral Health: Impacts and Prevention Tips