Teens say they don't vape, they 'Juul.' That makes the activity hard to track Los Angeles Times Are Vitamin Vapes Safe? Vaping harms your health Cancer Institute NSW I Can Quit Whenever I Want, And Other Lies Teens Tell Themselves About Vaping Vaping Illnesses Are Linked to Vitamin E Acetate, C.D.C. Says The New York Times If you don't vape, don't start. Most e cigarettes contain nicotine, which is highly addictive and harmful to your health, especially for teens, young adults and those who are pregnant. Learn more about