Why Do So Many Teens Vape? Rally Health Explainer: More teens are vaping. This is why that's a concern. College of Public Health UGA Vaping impairs memory, focus, and impulse control. Vapes contain toxins, heavy metals, and carcinogens. And vaping is a fast growing epidemic among our teens. which is why, in this year's Kids' Course, Vaping in teenagers is an invitation to smoking A Guide To Teen Vaping What You Need To Know