5 cigarettes a day pack years Pack-years is way to measure a smoker's exposure to tobacco. Higher exposure means higher risk for lung cancer. beaumont.org/lung Smoking fewer than 5 cigarettes
Smoking fewer than 5 cigarettes a day results in approximately 2 3 of the lung damage found in smokers who smoke 30 or more cigarettes a day, finds a new study that followed Pack Year Smoking History: How to Calculate It Clinically Cancer Prevention ECU Health Pack Year Calculator Smoking history calculator Ready to Screen
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