As smoking is the main cause, most people diagnosed are over the age of 40. The course of COPD progression may be slowed if smoking stops, making it very important that people with COPD do not continue to smoke after diagnosis. The three key symptoms of COPD are: Cough Sputum (phlegm/mucus) production Shortness of breath on exertion These ongoing symptoms are not normal but become normal to the … Continue reading Smoking and COPD – The link