The number of US teens who vape more than doubled in the last year ABC News reported on illegal vapes and found that many of them contain unregulated levels of nicotine and unknown chemicals. Because these products bypass safety regulations, the actual contents often Lawmakers focus on Juul's role in teen vaping surge Straight talk about vaping for parents Health Outcomes & Biomedical Informatics College of Medicine University of Florida Federal officials push against illegal vapes, citing health risks