hi im dave I presently have afib not bad I take meds for it and blood thinner med. doctor did a chest xray and I have do a nuclar stress test. he wants to check and make sure theres no blockages. im in process of quiting smoking. I was wondering if my lungs will improve any after I quit even if im told I might have copd . I have cut way back on smoking almost to quiting. I want to improve my health