Juul & a Vaping Crisis for Teens Morningside Center for Teaching Social Responsibility Juul illegally called its e cigarette safer than smoking, FDA says Los Angeles Times JUUL: Side effects and health risks Juul: Why a trendy e cig is causing a social and public health commotion 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.