The FDA is allowing vaping brand Juul to keep its e cigarettes on the market. Studies from Juul show its e cigarettes are less harmful for adult smokers, who can benefit from switching completely INFOGRAPHIC: How Dangerous Are E Cigarette Ingredients? DYK 174,000+ Louisiana youth currently use tobacco products. Research shows that most young people who vape do not know that e cigarettes contain nicotine, instead thinking it is harmless water vapor. Most adults What Does A JUUL Really Do To Your Body? Franciscan Health