New study challenges claims on aldehyde content of third generation e-cigarettes

(Wiley) In January 2015 a report published as a research letter to the New England Journal of Medicine found that a third generation e-cigarette -- an e-cigarette with variable power settings -- set to the maximum power and long puff duration generated levels of formaldehyde that, if inhaled in this way throughout the day, would several times exceed formaldehyde levels that smokers get from cigarettes. Media worldwide accordingly reported this new health hazard of e-cigarettes.