FDA regulators said Juul's studies show its e cigarettes are less harmful for adult smokers, who can benefit from switching completely to vaping. What is JUUL? How does the disposable vape ban work, and how harmful is vaping? The FDA and Juul are fighting over a vape ban, but the role of e cigarettes in the world of tobacco abuse is not clear cut FDA orders Juul to remove all vaping products from US market