Most e-cigarettes contain nicotine, and nicotine exposure during adolescence can harm the developing brain, according to the FDA and CDC survey report, published in the Morbidity and Mortality Weekly Report
[79] Although several studies have found lower levels of carcinogens in e-cigarette aerosol compared to smoke emitted by traditional cigarettes, the mainstream and second-hand e-cigarette aerosol has been found to contain at least ten chemicals that are on California's Proposition 65 list of chemicals known to cause cancer, birth defects, or other reproductive harm, including acetaldehyde, benzene, cadmium, formaldehyde, isoprene, lead, nickel, nicotine, N -Nitrosonornicotine, and toluene
And there's a solution for that
PMC 3937158
[4] Dick Reynolds became a Democratic politician, mayor of Winston-Salem, and treasurer of the Democratic National Committee