Scientists are raising serious concerns about the long term health effects of vaping, warning that it could increase the risk of lung and mouth cancer. Recent research suggests that the chemicals inhaled through CoEHAR Replica study: "Claim that e cigarette aerosols make cancer cells more resistant to chemotherapy debunked!" CoEHAR Use of e cigarettes after quitting smoking increases lung cancer risk Cancerworld Magazine What chemicals are in a cigarette? What does smoking do to your body? Cancer Research UK E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA