Vaping harms your health Cancer Institute NSW Health effects and known pathology associated with the use of E cigarettes ScienceDirect 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 Know the Risks: E cigarettes and Young People Community Commons Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Health impacts of electronic cigarettes ANU National Centre for Epidemiology and Population Health