Thanks
Respiratory & Sleep Medicine Physician
The majority of patients that smoke have COPD, but not everyone. It's essentially a condition, where there are indications in the lungs and the airways; and that damage is imminent, and often non reversible. So the damage would have been some time ago. As lungs age, as the body ages, lung function deteriorates over time. The peak is at about the age of 30, 35, so the added damage from smoking plus natural aging of the lungs, will lead to worsening lung function.
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