What does it mean to be "opposed" to the use of unregulated e-cigarettes? It means that the European Respiratory Society is opposed to the use of e-cigarettes in any setting in which they are unregulated, such as the current situation throughout most of the world, including in the United States.

Well, Polosa et al. have conducted exactly such a . They examined the changes in asthma symptoms among smokers who continue to smoke versus those who switch to electronic cigarettes. These investigators reported that in contrast to real cigarettes, the fake ones result in actual harm reversal. Lung function, asthma control, and asthma symptoms were significantly improved among patients who switched from regular cigarettes to electronic cigarettes. These improvements were even observed among patients who became dual users of both real and fake cigarettes.

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