Some reports state that these new, flavored smoking devices are less harmful than tobacco cigarettes but how safe is vaping? In this third part of a four part series, China Daily examines the About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Illustration of the four generations of e cigarette or vaping products. Download Scientific Diagram How have e cigarettes changed over time? To Vape or Not to Vape: The Truth About E cigarettes Lions Talk Science Population Based Disease Odds for E Cigarettes and Dual Use versus Cigarettes NEJM Evidence