Vaping harms your health Cancer Institute NSW E Cigarettes: Know the Health Risks Department of Health Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all Vaping and E Cigarettes ADAPP Health effects and known pathology associated with the use of E cigarettes ScienceDirect