Chemical characterisation of the vapour emitted by an e cigarette using a ceramic wick based technology Scientific Reports Evidence so far shows e cigarettes are much safer than smoking. Here's why: E cigarettes rated most effective smoking cessation method by new evidence review Medical Update Online Another Gross Reason to Put Down the E Cigarettes American Lung Association Evidence update on e cigarette dependence: A systematic review and meta analysis ScienceDirect Electronic cigarettes: call to action