Juul May Have Started a Nicotine Arms Race in San Francisco, Where E Cigs Are Now Banned Business Insider E cigs have similar risks to cigs for some diseases and nearly as high for others. Dual use riskier than smoking alone Stanton Glantz blog Electronic cigarette use among young people in Wales: evidence from two cross sectional surveys BMJ Open E cigarette use is linked to higher heart attack risk, especially in former smokers How Much Does Vaping Cost Individuals and Employers? FDA authorizes first e cigarette, cites benefit for smokers PBS News