Clearing the Air: The Harsh Reality of Vaping and Smokeless Products Leading to 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 A scientific review has raised fresh concerns about the long term cancer risks of vaping, concluding that e cigarettes are probably carcinogenic, while also acknowledging significant gaps in the evidence. The analysis of reviews Evidence update on the cancer risk of vaping e cigarettes: A systematic review Can Vaping Cause Thyroid Cancer? Risks, Facts, and What Science Says