About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Construction of electronic cigarettes Wikipedia Parents Guide to Vaping The Ultimate Guide All about vapes what's in them, how do they work, and more Philip Morris International Is Vaping Better Than Smoking? American Heart Association What is vaping? What are e cigarettes? Is it as harmless as it is made out to be? The truth is many e cigarettes contain nicotine, a highly addictive substance that can affect brain