Teens say they don't vape, they 'Juul.' That makes the activity hard to track Los Angeles Times What parents need to know and do about e cigarettes Harvard Health Vaping's Hidden Dangers: New Study Links E Cigarettes to DNA Changes Are heated tobacco products a new health risk? Severe restrictions to be placed on the sale of most e cigarettes: FDA pennlive.com E cigarettes contain hazardous substances, addictive and harmful