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. Risks of Vaping Don't Be Misled by the Smoke! Vaping refers to "the use of e cigarettes or other electronic nicotine delivery systems (ENDS) that heat a liquid (often containing Vaping Public Health Idaho North Central District e Cigarettes, Vaping and the Risks of Severe Lung Disease Canyonlands Healthcare