The study concludes that e-cigarettes are not helpful for smoking cessation among cancer patients.

1. The Vickerman study

To make matters worse, the deeming regulations would prohibit electronic cigarette companies from informing their consumers that vaping is less hazardous than smoking. In fact, e-cigarette companies would not even be allowed to inform consumers that electronic cigarettes are free of tobacco, or that they have much lower levels of a number of carcinogens and are free of thousands of harmful chemicals that are present in tobacco smoke.

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.

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