Does Vaping Cause Lung 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 New strong evidence that Juul is more toxic to lungs and hearts than earlier e cigs Stanton Glantz blog JUUL Faces Wrongful Death Lawsuit as Vaping Injuries Surge The Mysterious Vaping Illness That's 'Becoming an Epidemic' The New York Times 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.