"Only 1.8% of children are regular users; 90% of regular or occasional users are young people who are already smokers or ex-smokers; 91% of young people have not tried an electronic cigarette even once; and this is despite the fact that over 80% of young people are now aware of e-cigarettes (up from under 70% in 2013)."

Furthermore, it is well known that electronic cigarette users do not inhale more deeply than smokers. While smoke does enter the distal airways - which is why adenocarcinoma rates have increased so dramatically - vaping involves aerosol inhalation and the aerosol is mostly absorbed in the upper, not the lower airways. As with a nicotine inhaler, most of the nicotine absorption occurs in the upper airways.

The ACLU is also challenging the inclusion of electronic cigarettes in the regulations, as it seems absurd to ban the use of e-cigarettes in all parks, given the lack of any evidence that vaping in a park poses any substantial public health threat.

In other words, Glantz has hidden this information from the reader in the review article, even though he felt it was important enough to mention in the other article. In my opinion, this is knowing dishonesty. It is hiding critical information from the reader that would affect the reader's assessment of the validity of the study's conclusions. Moreover, the review article proceeds to do precisely what the other article argues cannot and should not be done with these studies (i.e., draw conclusions about the efficacy of e-cigarettes as smoking cessation aids).

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