The Michigan Medical Society has that would protect the public's health by prohibiting the sale of electronic cigarettes to minors.

If the policy were based on health principles, then it would certainly include other behaviors, such as those related to obesity, which have large health care costs and which set a "bad example." It would certainly include alcohol use as well.

According to a new published in the International Journal of Environmental Research and Public Health, asthmatic smokers who use electronic cigarettes experience an improvement in their asthma symptoms and lung function, even if they remain dual users.

The truth is that there are major advantages and disadvantages of both surveys and clinical trials to examine the potential benefits of electronic cigarettes. Both types of study designs have inherent biases which can produce results that are more "favorable" or "unfavorable." This is why the methodology of published research needs to be examined so carefully. It is not so simple as to dismiss RCT evidence and accept survey evidence. One needs to consider the strengths and limitations inherent in both approaches. And at the end of the day, the only defensible approach, I believe, is that both types of studies are necessary, and we must carefully interpret and synthesize the findings from studies of multiple designs, using the totality of the evidence to make final judgments about the benefits of electronic cigarettes.

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