So you started when: You were 12? Let's hope you stay off. The nicotine addicts, the tobacco causes dna damage. Do not relapse. Your amount of smoking is one element, the duration of smoking another. There is no safe level of smoking.
Answered 8/18/2013
4.9k views
Some chance: The use of cigarettes increases the risk of malignancy after 15 to 20 yr of smoking. Additional genetic risks may also contribute. Quitting smoking reduces but does not eliminate the risk.
Answered 10/22/2013
4.9k views
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