Can Lungs Repair After 20 Years Of Smoking?
Can Lungs Repair After 20 Years Of Smoking? Can Lungs Go Back to Normal After Quitting Smoking? Yes, your lungs can go back to normal after quitting smoking. One large study found that after 20 years smoke-free, the risk of COPD drops to the same as if you have never smoked and after 30 years,