The study found that: "Neither a brief session of active e-cigarette smoking (indicative: 3% reduction in FEV1/FVC) nor a 1 h passive e-cigarette smoking (indicative: 2.3% reduction in FEV1/FVC) significantly affected the lung function (p > 0.001). In contrast, active (indicative: 7.2% reduction in FEV1/FVC; p < 0.001) but not passive (indicative: 3.4% reduction in FEV1/FVC; p = 0.005) tobacco cigarette smoking undermined lung function."

The most interesting part of the study that I found was diacetyl can be found in all the sweet E-Juices. It was a known fact that diacetyl is present in most custard and creamy E-Juices as that is where the cream and butter flavoring comes from, but some of the fruity and sweet E-Juices and a lot of people in the community thought they were diacetyl free. Now granted Dr. Farsolinos was not transparent about the levels of diacetyl in each individual E-Juice so we can’t compare the fruit E-Juice diacetyl levels to that of the cream and custard E-Juices. However, I would assume that the E-Juices with creamy and custardy tones should have a higher concentration of diacetyl than that of the fruit and sweet flavors.

If we accept that authors' word - that there is no way from this study to exclude the possibility that youths are initiating smoking with conventional cigarettes and then moving on to e-cigarettes - then it follows that these authors are being dishonest in telling the public that the study shows that:

•Ads must not encourage non-smokers or non-nicotine users to use e-cigarettes

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