Protective cells in the lungs of ex smokers could explain why quitting smoking reduces the risk of developing lung cancer later in life. Stopping smoking completely is the best thing you can do PDF) Improving our understanding of e cigarette and refill packaging in the UK E cigarette marketing in the UK 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