Teens inhale cancer causing chemicals in e cigarettes 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 Comparing the cancer potencies of emissions from vapourised nicotine products including e cigarettes with those of tobacco smoke Tobacco Control Vaping Linked to Early Cancer Signs, New Study Warns Firstpost America YouTube Lung cancer risks persist with e cigarette use after quitting tobacco smoking