What Does A JUUL Really Do To Your Body? Franciscan Health 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. This statement is common, but it is not true! According to the manufacturer, a single JUUL pod contains as much nicotine as a pack of 20 regular cigarettes! Juul disregarded early evidence it was hooking teens