UofL study shows nicotine in e cigarettes may not be harmless, as some claim UofL News Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times How Does Vaping Affect You? Short & Long Term Effects Explained While vaping is not risk free, it is less harmful than tobacco Our World in Data Vaping and Harm Reduction ASH NZ Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica