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 E Cigarette Use After Smoking May Raise Risk for Lung Cancer www.PhysiciansWeekly.com Does Vaping Reduce Lung Cancer Risk? Insights from an Oncologist Dr Saadvik Raghuram E Cigarettes and Lung Health American Lung Association Teens inhale cancer causing chemicals in e cigarettes