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A 32-year-old member asked:

What happens if you've quit smoking at 25 years old. about how long will your lungs take to get back to where they were?

1 doctor answer1 doctor weighed in
Dr. Robert Fietsam
Surgery - Thoracic 36 years experience
Maybe 5-8 years: It is hard to find research on that particular issue, but there are tests that a Pulmonary Specialist can perform (FEV1, lung capacity, arterial blood gases), that could check how good your lungs currently are. For long time smokers, 10-15 years to reduce risk of lung cancer to normal population.
Last updated Jan 25, 2016

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