Strongest evidence yet that vaping likely causes cancer Vaping may not contain tobacco, but that doesn't mean it's harmless. E cigarettes still expose your lungs to nicotine and a mix of chemicals that have been linked to lung disease, heart issues, Vaping and the use of e cigarettes are likely to cause cancer, according to a new study published by the University of New South Wales on 30 March. The study, which brought together Scientists Warn: Vaping Likely Causes Cancer Does vaping cause lung cancer? UT MD Anderson