How Switching to E Cigarettes After Smoking Cessation Affects Lung Cancer Risk Vaping Linked to Early Cancer Signs, New Study Warns Firstpost America YouTube 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 Although research on cancer risks associated with vaping is still limited, a 2025 systematic review found substantial evidence that e cigarette exposure is associated with biomarkers reflective of cancer disease risk. This includes E cigarettes and cancer: new report faces sharp criticism Vejpkollen.se Evidence update on the cancer risk of vaping e cigarettes: A systematic review