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.

Based on this single study, Dr. Glantz concludes: "the FDA must be extremely careful about assuming that e-cigarettes uniformly pose less risk than conventional cigarettes."

The study concluded that: "e-cigarettes generate smaller changes in lung function but similar nicotinergic impact to tobacco cigarettes."

It is worth noting that the conclusions which Dr. Glantz is disseminating are destructive because they undermine decades of public education about the severe hazards of smoking. If the public thinks that smoking is only as risky as vaping, then it is likely that many smokers will decide to continue smoking rather than quitting using electronic cigarettes. And many ex-smokers who have quit with electronic cigarettes may return to smoking, thinking that they might as well since they are not getting any definite health benefit from having made the switch.

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