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A 16-year-old male asked:

How can someone like my dad chew 2 tins for 40 years and not get cancer and some people get irvin like 2 years. his mouth was really bad though!

1 doctor answer1 doctor weighed in
Dr. Gurmukh Singh
Pathology 50 years experience
Genetics: We respond differently to the same stimuli, including cancer causing agents. Only a minority of the tobacco users get cancer and the difference between users who get cancer and those who do not is mostly due to differences in the genetic make up of people.
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Last updated Apr 11, 2013


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