Is vaping safer than smoking? Dr Colin Mendelsohn E cigarette flavors are toxic to white blood cells, warn scientists Eliminating Tobacco Use in Washington Kids American Heart Association Can Smoking and Vaping Cause Back Pain? National Spine Health Foundation 5 Vaping Facts You Need to Know Johns Hopkins Medicine 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.