Stop calling the evidence "mixed." A massive new overview from the University of Oxford has analyzed a decade of data and found a clear winner in the fight against smoking: nicotine e cigarettes. E Cigarettes Are in Vogue and at a Crossroads The New York Times An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link Proportion of women aged 16 24 vaping daily highest since current records began Yahoo News UK Research Report: Tobacco, Nicotine, and E Cigarettes Research Report About E Cigarettes (Vapes) Smoking and Tobacco Use CDC