Vaping Linked to Early Cancer Signs, New Study Warns Firstpost America 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 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 Evidence update on the cancer risk of vaping e cigarettes: A systematic review