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 A new study published by the University of New South Wales on 30 March suggests that vaping and e cigarette use may increase the risk of cancer. The research, conducted by a team Disposable E Cigarettes More Toxic Than Traditional Cigarettes UC Davis E cigarettes around 95% less harmful than tobacco estimates landmark review GOV.UK