What are the odds a former smoker will get lung cancer?
The risk of lung cancer declines with smoking cessation. Even with less than ten years of smoking cessation, that risk is reduced by a third. However, that risk of developing lung cancer persists even as far out as thirty years of smoking cessation. This data is a little controversial, and other reports suggest that there is great impact with smoking cessation at shorter durations, but other studies such as this one that I quoted still show a persistent risk for lung cancer long-term.