E cigarette research concludes devices are bad for young people, but may be helpful for smokers E Cigs Vapes & Pod Based Tobacco Prevention Toolkit Stanford Medicine Flowchart of studies included in the e cigarette systematic review. Download Scientific Diagram Since their introduction in Europe in 2006 and the U.S. in 2007, the use of e cigarettes a.k.a., vapes has skyrocketed. A recent review from researchers in Australia found the results Vaping: How E cigs Work (Infographic) Live Science Most E cigarette Users Ages 18 to 29 Never Smoked Before American Cancer Society