E Cigarette How E Cigarettes Work, Health Risks & Teen Use Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica 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 Are heated tobacco products a new health risk? What Vaping Really Does to Your Lungs University of Utah Health