Vaping substantially less harmful than smoking, largest review of its kind finds King's College London 5 Vaping Facts You Need to Know Johns Hopkins Medicine Smoking, drinking and drug abuse decline among U.S. teens, who prefer pot and vaping, study finds Los Angeles Times Stocking Up At Our Smoke and Vape Shop KC Smokers Heaven The Vape Debate: This New Trend May Be Riskier Than You Think MedStar Health