One of my first assignments at the Office on Smoking and Health at CDC was to evaluate the evidence regarding the relationship between changes in tar yield of cigarettes and the risk of lung cancer. I examined the literature regarding both the introduction of the filter and other design changes that subsequently led to very low tar yields. My conclusion was that the filter itself produced a massive decline in tar yields, so great that even with smoker compensation, the lung cancer risk declined. However, further declines in tar yields were apparently not sufficient to overcome compensation, and lung cancer risks did not decline any further. Thus, my conclusion was that the filter produced small but measurable declines in lung cancer risk, but low-tar cigarettes within the filtered cigarette category conveyed no decrease in lung cancer risk.

Stated another way, Dr. Glantz is cautioning the FDA against assuming that e-cigarettes are safer than conventional cigarettes in terms of their effects on lung function.

A second major advantage of a clinical trial is that it can examine the potential effectiveness of interventions in which the use of a product is promoted for use among smokers who are interested in quitting. A survey cannot do this, because it can only examine the use of products under current conditions. It provides no information on what would happen if the product was actively promoted to a group of smokers, as it is in a clinical trial.

Even the e-cigarette industry itself supports this legislation. How ironic, then, that the state's physicians, along with other "anti-smoking" groups, are opposing this bill, which was enacted by the legislature and awaits the governor's signature. The "anti-smoking" and "health" groups are urging the governor to veto the bill.

In a recent in Forbes magazine, Jacob Sullum reviews some of the evidence which demonstrates that many former smokers have quit smoking successfully using electronic cigarettes as a cessation aid. Sullum writes:

Royal Australasian College of Physicians president Professor Nicholas Talley has reviewed the evidence on electronic cigarettes.

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