5 cigarettes a day pack years What is Cigarette Year? Smoking a pack a day

Smoking a pack a day for a year causes 150 mutations in lung cells Pack years is a way to measure a smoker's exposure to tobacco. Higher exposure means higher risk for lung cancer. beaumont.org lung Annual Screening for Lung Cancer: Is it right for me? Your risk of lung cancer is increased by smoking more cigarettes a day and for more years. Screening is looking for a Don't let smoking sneak up on you! A simple calculation can tell you your pack year history. Here's how it works: number of packs per day X number of years smoking For

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