The first symptom of COPD is usually a chronic cough. As the disease progresses, the airspaces narrow and more often develop pulmonary emphysema.
Health inequality between rich and poor Canadians got bigger.
Researchers find that heart disease, cancer, accidents, stroke and diabetes have claimed lesser lives since 1969.
Genes are the reason why some smokers never develop lung disease despite non-smokers or those who have never smoked in their life can acquire Chronic Obstructive Pulmonary Disease (COPD).
