Tony Gwynn's at age 54 from repeated smokeless tobacco use is the reason why. While it is not common, traditional smokeless tobacco use is clearly associated with oral cancer. In addition, there is little evidence that as marketed and used in the United States, these products are helping a substantial proportion of smokers to stay off cigarettes.
The study is also notable because it found no adverse effects of electronic cigarettes on respiratory health among the vulnerable subpopulation of asthmatic patients examined.
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