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. E Cigarettes Vaping with Juul & Other Electronic Cigarettes Are Dry Herb Vaporizers Better for Your Lungs? Science Says Yes Planet of the Vapes What You Need to Know About Vaping Vapes FRANK Impacts of vaping and marijuana use on airway health as determined by exhaled breath condensate (EBC) Respiratory Research Springer Nature Link