Chronic obstructive pulmonary disease (COPD)

World Health Organization

07 Mar 2024

Chronic obstructive pulmonary disease (COPD)
Key facts
  • Chronic obstructive pulmonary disease (COPD) is the third leading cause of death worldwide, causing 3.23 million deaths in 2019.
  • Nearly 90% of COPD deaths in those under 70 years of age occur in low- and middle-income countries (LMIC).
  • COPD is the seventh leading cause of poor health worldwide (measured by disability-adjusted life years)
  • Tobacco smoking accounts for over 70% of COPD cases in high-income countries. In LMIC tobacco smoking accounts for 30–40% of COPD cases, and household air pollution is a major risk factor.

 

 

Overview

Chronic obstructive pulmonary disease (COPD) is a common lung disease causing restricted airflow and breathing problems. It is sometimes called emphysema or chronic bronchitis.

In people with COPD, the lungs can get damaged or clogged with phlegm. Symptoms include cough, sometimes with phlegm, difficulty breathing, wheezing and tiredness.

Smoking and air pollution are the most common causes of COPD. People with COPD are at higher risk of other health problems.

COPD is not curable but symptoms can improve if one avoids smoking and exposure to air pollution and gets vaccines to prevent infections. It can also be treated with medicines, oxygen and pulmonary rehabilitation.