Vaping vs. smoking: what are the risks? Pacific Life Re JUUL E Cigarettes Harrison County Health Department Health impacts of electronic cigarettes ANU National Centre for Epidemiology and Population Health INFOGRAPHIC: How Dangerous Are E Cigarette Ingredients? Health effects and known pathology associated with the use of E cigarettes ScienceDirect 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.