There are clearly two ways to spin this study. One is to emphasize the study's reassuring findings that there were no substantial causes for serious concern. Another is to spin it as these authors did, stating their conclusion as follows:

As tobacco control advocates commemorate the 50th anniversary of the release of the 1964 Surgeon General's report on smoking by Dr. Luther Terry, we are praising Dr. Terry for his groundbreaking and pivotal work that many view as having started the tobacco control movement. Dr. Terry served as Surgeon General of the United States Public Health Service from 1961 to 1965.

It shouldn't take a rocket toxicologist to figure out that electronic cigarettes - which contain no tobacco - have immense benefits over traditional tobacco products. It shouldn't take a rocket epidemiologist to figure out that eliminating almost all of the more than 10,000 chemicals and 60+ carcinogens in cigarettes is going to result in a safer product. And anyone who has read the numerous laboratory, toxicology, and clinical studies of electronic cigarettes and tobacco cigarettes should understand that vaping is much safer than smoking.

One thing that is true is that there are no cardiovascular benefits to smoking reduction. The reason for this is that the adverse cardiovascular effects of smoking saturate at a low level of exposure. However, with carcinogenic effects as well as lung disease, there is a well-recognized dose-response relationship between exposure and disease risk. Therefore, substantial smoking reduction has no cardiovascular benefit but it does lower lung cancer risk and respiratory morbidity.

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