Juul claimed its e cigs are 'totally safe,' but the case against vaping keeps building MarketWatch Juul took a page from Big Tobacco to revolutionize vaping Los Angeles Times JUUL E cigarettes Are Favorites Of Teens, And That's a Problem Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs. Teens Are Still Vaping Flavors, Thanks To New Disposable Vape Pens KPBS Public Media