What Is COPD?

COPD is characterized by the restriction of airflow into and out of the lungs, making breathing difficult. Many people with COPD have trouble walking short distances and are susceptible to illnesses such as pneumonia. The term COPD also encompasses emphysema and chronic bronchitis. The causes of COPD include smoking, having the alpha-1 antitrypsin deficiency and long-term exposure to inhaled pollutants. The severity of symptoms ranges from mild to severe and include shortness of breath, coughing, wheezing, recurrent infections and