The Juul's surging popularity among high schoolers has led public-health advocates and researchers to issue alarming warnings.<br />Young people who vape may be as many as seven times more likely to smoke regular cigarettes. This compared to teens who never try an e-cig.<br />Juul says its device was designed to help adult smokers transition to a healthier but equally satisfying product. The company claims that its advertising materials never targeted teens. <br />
