Is There a Link Between Vaping and Lung Cancer? Thirdhand Vapor from E cigarettes Damages the Lungs of Mice Thirdhand Smoke Resource Center E Cigarettes Linked To Lung Cancer The rise of teen vaping is worrying doctors worldwide. While e cigarettes were once marketed as a safer alternative, research shows they contain nicotine, heavy metals, and cancer causing chemicals that can damage developing E cigarettes cause lung cancer in mice, finds first study tying vaping to cancer