At the Department of Health and Human Services, we are deeply concerned about the risks that e-cigarettes pose for children, given how quickly teenage use of these products has accelerated. Using a small battery to heat a liquid that contains nicotine, e-cigarettes turn the liquid into an inhalable vapor. [...]

And e-cigarettes' popularity is accelerating: From 2017 to 2018 [...] the number of high-school-age children reporting use of e-cigarettes rose by more than 75 percent.