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. Medical Infograph. This Infograph compares the potential health risks Download Scientific Diagram Resources & Publications Electronic Cigarettes Smoking & Tobacco Use CDC Nonnicotine vapes may be marketed as safe, but many still contain chemicals, have unknown health effects, and aren't FDAregulated. Teens are using them more ofteneven alongside nicotine vapes. No ecigarette is risk free.