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 is e Cigarette and Associated Health Risks IntechOpen The Dangers of Vaping How E Cigarettes Affect Student Health Toxicity, Chemistry, and Public Health Relevance of Emerging Nicotine Analog Vapes, Pods, and Pouches Chemical Research in Toxicology Vaping vs. smoking: what are the risks? Pacific Life Re Health effects and known pathology associated with the use of E cigarettes ScienceDirect