Before anyone swears off electronic cigarettes completely (which is not the point of this article by the way) the levels of diacetyl and acetyl propionyl present are higher than the NIOSH standards, BUT they are severely lower than that of regular cigarettes. In terms of getting obliterative bronchiolitis, it is still a lot safer to use electronic cigarettes over regular cigarettes as the diacetyl and acetyl propionyl are much lower, but just because they are lower, we cannot dismiss diacetyl being in our E-Juices immediately. If they flavors do have diacetyl, they should be avoided if possible. In fact, TFA/TPA is coming out with a new line of custard and cream flavors (known as the V2) that contain little to no diacetyl in their flavorings. I am hesitant to believe there aren’t at least traces of diacetyl present as we already know even some fruit flavors have them. But hopefully it will meet the NIOSH standards with their new line. With TFA/TPA spearheading non-diacetyl rich flavorings, it is my hope that other flavoring companies are following the same practice. Electronic cigarettes are becoming increasingly popular every day; the flavoring companies need to meet the demands of the community and avoid diacetyl in their flavorings if possible.

Fortunately, there is a simple way to evaluate this hypothesis, at least on a preliminary basis, prior to waiting for the results of longitudinal studies. Enough youth are experimenting with electronic cigarettes, and the increase in youth e-cigarette use has been dramatic and sustained enough, that if the gateway hypothesis were correct, we would be starting to see an increase in smoking prevalence among youth due to the many new smoking initiates that were converted from e-cigarette experimentation to smoking.

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