Explainer: More teens are vaping. This is why that's a concern. College of Public Health UGA More than 2 million US teens use e cigarettes, a quarter of them daily, CDC and FDA find CNN Do teens need help kicking the vape habit? The FDA thinks so Vaping and Teens: A Guide to the Dangers and How to Quit Franciscan Health Study: Teens who vape are more likely to smoke in the future UPI.com