Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
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Awareness and use of electronic cigarettes (e-cigs) has increased dramatically. Electronic Nicotine Delivery Devices deliver an aerosol comprised usually of water, propylene glycol and/or glycerin, nicotine, and flavorings. Scant research exists to evaluate the efficacy and safety of such devices, and only one quantitative survey of European users (N = 81) has been published. This qualitative study explores e-cig users' ("vapers") experiences. ⋯ The learning curve to using e-cigs has important implications for laboratory tests of these devices with novice users. Similarly, the multiple e-cig options and the use of "mods" create challenges for researchers and policy makers. Transdisciplinary research is urgently needed, and experienced "vapers" are very interested and willing research participants.