In this study, the authors study attempted to determine the number of electronic cigarette products on the market, both in terms of the number of different brands and the number of different flavors. Using comprehensive internet searches, the researchers found as follows:

1. Taking an exam

"It is not known how much nicotine or other potentially harmful chemicals are inhaled by users, nor is it known whether e-cigarette use may lead to use of other tobacco products. Neither are the benefits of using e-cigarettes over traditional products known."

Peter Hajek, director of the Tobacco Dependence Research Unit at Queen Mary, University of London, also this critical flaw in the study: ""The authors followed up smokers who tried e-cigarettes but did not stop smoking, and excluded smokers who tried e-cigarettes and stopped smoking," he said. "Like smokers who fail with any method, these were highly dependent smokers who found quitting difficult. The authors concluded that e-cigarette (use) was not helpful, but that would be true for any treatment however effective if only treatment failures were evaluated."

The methods of the study were as follows: "Individuals were recruited at e-cigarette retail locations in a large metropolitan city in the midwestern portion of the United States in July 2013. A total of 159 participants completed a brief 29-item self-report measure that assessed behaviors and perceptions of use."

LAST：Smy hot selling e cigarette Big Dripper clone atomizer big dripper rdta atomizer Big Dripper RDTA clone |NEXT：2014 New Technology colored smoke e cigarette ego mini CE4 ecigs