Juul, the vape device teens are getting hooked on, explained Vox Juul & a Vaping Crisis for Teens Morningside Center for Teaching Social Responsibility Juul vs Vuse: A Comparative Look at Leading Vaping Brands Big Vape' reporter talks lessons learned from Juul's rise, fall, and future The Examination 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. JUUL Side Effects: What Are the Health Risks?