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Causes of COPD

In 80-90% of cases, COPD is caused by smoking. Some non-smokers can also get COPD.

Other causes of COPD include:

  • Genetic reasons (e.g., alpha-1 antitrypsin deficiency)
  • Air pollution
  • Workplace exposures (fumes, dusts)
  • Second hand smoke
  • Frequent lung infections as a child
  • Wood smoke and other biomass fuels (e.g., animal dung, crop residues) used for heating and cooking