Vaping: An Epidemic Among Youth Clay Center for Young Healthy Minds The electronic cigarette epidemic Chronic Disease E cigarettes and health: the jury is still out Harvard Health Older users of e cigarettes at greater risk of respiratory illness, study suggests CUNY Graduate School of Public Health & Health Policy Flavored e cigarettes may affect the brain differently than non flavored Penn State University E cigarettes Stress Lungs, Impair Protein Function News Release PNNL