Does Vaping Cause Lung Cancer? What We Know (and Still Don't) The Dangers of Juuling National Center for Health Research Vaping Awareness Somerville Public Schools Vapes don't produce harmless water vapor. They can contain addictive nicotine, cancer causing chemicals like acetaldehyde and formaldehyde, as well as heavy metals that don't belong in your body. Live Vape Free is Can Vaping Cause Lung Cancer? What You Should Know MyLungCancerTeam Juul Ban: Adult Ex Smokers Say They May Pick Cigarettes Back Up