Diseases of the lung take many forms. Chronic obstructive respiratory disease and asthma are the most common forms. Chronic obstructive respiratory disease (COPD) is caused by irreversible obstruction of the larger airways in the lung. It makes is hard to move air in and out of your lungs. COPD, which includes chronic bronchitis and emphysema, puts you at risk for other health problems as well (ex. heart disease, eye problems).
COPD is a long-term lung disease often caused by smoking. The best way to decrease your chances of developing COPD and lung diseases is to not smoke, and by avoiding second smoke and other air pollution.
Source: Canadian Lung Association. “What is COPD?” Retrieved from: www.lung.ca.