Vaping immediately affects vascular health and oxygen levels, study shows, even without nicotine Health Watch wqow.com Vape and switch: Texas targets disguised e cigs in new legislative crackdown E cigarettes with a cigarette like level of nicotine are effective in reducing smoking and exposure to carcinogen, study finds VCU News Virginia Commonwealth University FDA says more than 5 million electronic cigarettes must be taken off the market POLITICO