Smoking damages nearly every organ and organ system in the body. Smoking is both the leading cause of cancer and the leading cause of death from cancer. 85 percent of lung cancer cases are ...

50 – 80 years of age Have a 20 pack-year history of smoking (1 pack a day for 20 years or 2 packs a day for 10 years) Are a current smoker or have quit within the last 15 years If you meet the ...