E Cigarettes Vaping with Juul & Other Electronic Cigarettes Smoking vs. Vaping: The Same Damage, Just Marketed Better! If your lungs could talk, they would tell you the harsh truth: Smoking and vaping both burn and damage your lungs, just differently. 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 Vaping and Lung Damage: What Pulmonologists Want You to Know Vaping likely to cause cancer: new findings What is the JUUL? Dana Farber Cancer Institute