E Cigs 'Less Harmful' Than Conventional Cigarettes: Review 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 Key Differences Behind the Vape The World Health Organisation's (WHO) first global estimate on e cigarette use reveals an alarming trend adolescents are nine times more likely to vape than adults. Designed by: @esha_attreya #upsc #upscprelims #upscpreparation #