Yesterday, a group of international lung health organizations issued a position statement on electronic cigarettes, which called for a ban (or severe restrictions) on these products until more is known about their health effects. In contrast, these organizations did not express any problem with real tobacco cigarettes remaining on the market, even though they kill millions worldwide each year, and electronic cigarettes are not known to have killed a single person ever.

While it is difficult for me to have to criticize anti-smoking groups because these are groups with which I have had a career-long collegial relationship, it appears that these groups are substantially harming the health of the public by impeding smoking cessation. Sadly, this means that their efforts are going to result in a significant amount of unnecessary disease and death.

But that isn't the end of the story. If this were simply a bogus conclusion, then we could simply evaluate the article as being junk science, dismiss it as bogus, and leave it there. But unfortunately, it doesn't end there.

• We lied to you when we told you that "No studies have been done to examine the safety of e-cigarettes."

a. Classic tobacco

There are some specific problems with survey studies that could lead to an overestimation of the benefits of electronic cigarettes. One major problem is that a survey study of the use of advanced vapor products would result in a severe bias towards finding a high level of effectiveness of these products. The reason? By the time smokers advance to use products like open-ended systems, they have already experienced success, fulfillment, and enjoyment with vaping. In other words, limiting the sample to users of advanced vapor products filters out the majority of e-cigarette users, who do not experience great success and therefore don't go on to the more advanced products.

LAST：amanoo electronic cigarette e cigarette amanoo |NEXT：Other properties ego k electronic cigarette e-cig ce4 ce5 ce6