A member asked:

If someone smoked 20 cigarettes over a year and then never smokes again would you say they are at risk compared to normal person of smoking diseases?

A doctor has provided 1 answer
Dr. Alvaro Aranda answered

Specializes in Pulmonology

Could be: If you smoked 20 cig (1 pacK in USA) X 1 yr that is 1 pack year. To develope disease an average of 20 pack yrs are required Likely if stoped after 1 yr will be normal within q year if any damage occured.

Answered 4/15/2016

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