Does Vaping Cause Oral Cancer THANC Guide 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 & a Vaping Crisis for Teens Morningside Center for Teaching Social Responsibility Disposable E Cigarettes More Toxic Than Traditional Cigarettes UC Davis Fears vaping could cause Cancer Healthwatch Barnsley New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking