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. Stop 'super cool' e cigarette from taking off among kids, UK told Vaping The Guardian Juul vape: What is it, why are teens addicted, and is it safe? CNET The FDA's Juul Ban May Not be a Pure Public Health Triumph