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. What Arthritis and Chronic Pain Patients Need to Know About the Vaping Crisis Surface Detection of THC Attributable to Vaporizer Use in the Indoor Environment Scientific Reports Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA How Smoking vs. Vaping Affects the Eyes Teen Tobacco Support Cancer Pathways