Nicotine use among young people is evolving. New research shows more youth are using multiple nicotine products at the same timemost commonly cigarettes and e cigarettes, with a growing rise in combining vapes What you should know about vapes and e cigarettes Difference Between E Cigarette and Vape Difference Between E Cigarette vs Vape F.D.A. Opens Door to More Flavored E Cigarettes The New York Times