Evidence update on the cancer risk of vaping e cigarettes: A systematic review Vaping releases toxic chemicals, including heavy metals, as well as ultrafine particles that go deep into the lungs. These increase the risk of heart and lung disorders. Juul Side Effects Long Term Does Vaping Cause Cancer? Juul Health Risks Australia From Vaping Symptoms Smokers who see others using JUUL electronic cigarettes want to smoke UChicago Medicine