Vaping is not replacing smoking. It is often added to it. This is called dual use. Nearly half of e cigarette users still smoke cigarettes. What this means: Smoking continues alongside vaping The 101 on e Cigarettes Infographic American Heart Association Choosing The Best Vape to Quit Smoking Vaped E cigarettes May Have Helped 18,000 People Quit Smoking in 2015 Respiratory Therapy E cigarettes: How they work, risks, and research E Cigarettes Are Effective at Helping Smokers Quit, a Study Says The New York Times