A member asked:

What in tobacco causes cancer?

A doctor has provided 1 answer

It's a long list!: There are about 70 known carcinogens - cancer causing chemicals - in tobacco. You can find the list at http://www.cancer.gov/cancertopics/factsheet/Tobacco/cessation There are combinations of things that people get exposed to that cause bodily harm. Alcohol and tobacco are known causes of head & neck cancer. There's just no safe level of tobacco, period.

Answered 9/24/2016

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