Switching to E Cigarettes Did not Prevent His Lung Cancer Death 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 Do E Cigarettes Cause Lung Cancer? Dr James Wilson E cigarettes are likely to cause lung cancer and oral cancer Lung cancer risks persist with e cigarette use after quitting tobacco smoking