Q&A: Is vaping as addictive as cigarettes? MultiCare Vitals Older users of e cigarettes at greater risk of respiratory illness, study suggests CUNY Graduate School of Public Health & Health Policy E Cigarette effects on oral health: A molecular perspective ScienceDirect Vaping Related Illness and Lung Disease NEJM 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 E cigarettes: How they work, risks, and research