E Cigarette Use Among Youth Smoking and Tobacco Use CDC E Z Quit Inc.'s Artificial Cigarette Reusable Plastic Cigarette Young users of electronic cigarettes exhibit reduced cardiorespiratory fitness Journal of Applied Physiology American Physiological Society Nicotine use in teens linked to higher depression and anxiety rates, especially with vaping and smoking combined. A large study of over 60,000 U.S. middle and high school students found that teens