Latest Cochrane Review finds high certainty evidence that nicotine e cigarettes are more effective than traditional nicotine replacement therapy (NRT) in helping people quit smoking Cochrane What does recent biomarker literature say about the likely harm from e cigarettes? PHCC Cristina Davis' lab to lead one of the largest studies of vaping to date Mechanical and Aerospace Engineering UC Davis Engineering 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 A analysis of more than 100 studies found the vaping can have long term health consequences.