If you quit smoking, will your lungs get better?

After smoking cessation, the lungs may gradually get better, but sometimes the lung damage caused by smoking is irreversible; for example, if smoking causes the patient to show COPD, even if smoking cessation COPD is impossible to fully recover. However, after smoking cessation, the progression of COPD will be slower. In addition, it is necessary to pay attention to the reduction in the incidence of other related diseases after smoking cessation; For example, the incidence of lung cancer after quitting smoking is lower than that of continuing smoking; even after quitting smoking for 15 years, the incidence of lung cancer is equivalent to that of non-smokers, and in this case it is no longer a high-risk group for lung cancer.