A 37-year-old member asked:
why does chewing tobacco, which contains absolutely no smoke or tar at all, cause cancer?
1 doctor answer
Dr. Edward Kuhnley answered
45 years experience Child Psychiatry
Carcinogens: At least 28 chemicals (carcinogens) in smokeless tobacco can cause cancer. The most harmful chemicals are tobacco-specific nitrosamines, which are formed during the growing, curing, fermenting, and aging of tobacco. The level of nitrosamines varies by product and scientists have found that the nitrosamine level is directly related to the risk of cancer.
Answered on Sep 9, 2016
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