To illustrate how inappropriate the use of these studies are to draw conclusions about the effectiveness of e-cigarettes for smoking cessation, let's look at two of these studies:

In other words, it is time to acknowledge that the law was flawed. It is not the cigarette companies that are to blame for the fact that consumers still understand which brand is which. The law is to blame. If the intent of Congress were to ban any brand that might mislead consumers, then the Congress should simply have banned these brands, requiring them to be pulled from the market.

This issue is particularly important because based on the arguments of these authors, the FDA should ban filtered cigarettes in order to protect the public's health. But in my opinion, such a move could be disastrous because it would result in a dramatic increase in tar delivery and possibly carcinogen dose, potentially leading to an increase, rather than a decrease in cancer.

• The truth is that there are at least 10 published studies that examined the health effects of electronic cigarettes. And this doesn't even include the more than 20 studies in which the chemical constituents of electronic cigarette liquids or vapor have been analyzed using gas chromatography/mass spectrometry.

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