The U.S. Food and Drug Administration has expressed concerns about rising incidence of vaping or smoking e-cigarettes among underage students and teenagers.

The FDA Commissioner Dr. Scott Gottlieb has said in a statement that use of the devices like Juul brand e-cigarettes have reached “epidemic” proportions. He said that these devices that were targeted initially for people wishing to quit traditional smoking are now being sold to teenagers who have never smoked.