The results of this study suggest that anti-smoking advocates such as Dr. Glantz are wrong in asserting that very few smokers "have switched away from cigarettes or managed to use them as a bridge to eventually go off cigarettes." Instead, there appears to be a large number of smokers who have indeed switched completely from smoking to vaping, and there also appears to be a large number of smokers who have successfully used electronic cigarettes as a bridge to complete smoking cessation.

• The truth is that there is abundant evidence that electronic cigarettes are much safer than regular cigarettes. Even the tobacco industry itself acknowledges that smoking is more hazardous than vaping.

"The paper, "Short-term effects of electronic and tobacco cigarettes on exhaled nitric oxide," by Sara Marini, et al, just published in Toxicology and Applied Pharmacology (Volume 278, Issue 1, 1 July 2014, Pages 9–15), reports important data showing that nicotine e-cigarettes, non-nicotine e-cigarettes, and conventional cigarettes all have similar effects of depression of exhaled nitric oxide."

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