chronic lung disease

The two most important risk factors for chronic respiratory diseases are tobacco smoke (through personal smoking and exposure to second-hand smoke) and indoor and outdoor air quality. Those who smoke cigarettes increase their risk of developing lung cancer, Chronic Obstructive Pulmonary Disease (COPD) and asthma. Exposure to second-hand smoke affects all Canadians, causing cancer in adult non-smokers, sudden infant death syndrome in newborns and worsening symptoms of those with asthma or COPD. All Canadians are affected by the quality of air they breathe. However, the effects are more severe in those with lung disease. People who have chronic respiratory disease should refrain from smoking (or being exposed to second-hand smoke) and as much as possible ensure a high quality of the air they breathe.