Nearly Half of JUULpods Contain Lung Toxin Study Says Evidence update on the cancer risk of vaping e cigarettes: A systematic review A new study has confirmed what many suspected, establishing vaping is likely to cause lung and oral cancer. #9News 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