Analysis suggests e cigarette use may be linked to lower rates of smoking Public Health Consequences of E Cigarettes Vaping vs. smoking: what are the risks? Pacific Life Re Your Body Immediately After Vaping an E Cigarette Association between prolonged dual use of cigarettes and E cigarettes and psychosocial factors among U.S. Smokers: Secondary data analysis from the 2013 to 2019 PATH study ScienceDirect 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.