Vaping exposes users to more toxic metals than smoking cigarettes 5 Vaping Facts You Need to Know Johns Hopkins Medicine Vaping lung illness: Harmful chemicals found in e cig flavoring juice Safe to vape? Clearing the air on e cigarettes Lincolnshire County Council Landmark E Cigarette Report Explodes Myth that Vaping Is as Toxic as Smoking What You Need to Know About Vaping American Heart Association