NIH funded studies show damaging effects of vaping, smoking on blood vessels National Institutes of Health (NIH) E cigarettes less addictive than cigarettes, PATH study shows Penn State University Analysis Shows Metals Emitted from E Cigarettes Are Within Safety Limits E Cigarette Reviews and Rankings An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link Notes from the Field: Use of Electronic Cigarettes and Any Tobacco Product Among Middle and High School Students United States, 20112018 MMWR E cigarette users show cancer linked genetic changes HSC News