Children Told JUUL Was "Much Safer" than Cigarettes By Manufacturers of Addictive Vape Pen, FDA Letter Claims AboutLawsuits.com Why is vaping so popular? Devices are sleek and can be highly addictive. Vox The FDA's Juul Ban May Not be a Pure Public Health Triumph What is JUUL? The Dangers of Juuling National Center for Health Research 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.