For e cigarettes, public supports health warnings & ban on sales to minors National Poll on Children's Health Ignore e cigarettes at your patient's peril Cleveland Clinic Journal of Medicine Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. E cigarettes are still 'a bet' and diseases may emerge within 10 or 20 years, warns Imperial College Clear The Air News Tobacco Blog Clear The Air News Tobacco Blog About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Vaping and E Cigarettes ADAPP