If the FDA is not sure that removing all of the carcinogens from cigarettes - and reducing their concentrations to no more than trace levels - is going to make "smoking" safer (even forgetting the fact that there is no smoke and no combustion associated with vaping), then one has to ask whether the FDA is basing its positions only on science, and not on any political or ideological concerns.

The article outlines the opinions of two camps within the tobacco control movement. One camp sees these devices as a potentially effective way of getting smokers to quit and therefore producing tremendous public health gains. The other camp dismisses the overwhelmingly positive testimony of smokers who have been helped by electronic cigarettes and argues that they are actually, on the whole, being harmed by these products.

The study finds that e-cigarette use is associated with smoking status. In addition, e-cigarette use is associated with heavier smoking and with fewer periods of smoking abstinence.

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