UNDERSTANDING
COPD

COPD CAUSES AND RISK FACTORS

What causes COPD?

COPD is a preventable condition, and the first step in keeping your lungs healthy is to know what the most likely causes are. 8

Smoking

Smoking is the number one cause of COPD. 4

  • Cigarette smokers are more than 2 times more likely to develop COPD than non-smokers.13
  • Smoking a hookah (water pipe/hubbly) carries almost a 3 times higher risk of developing COPD than non-smokers.13
  • Those who are merely exposed to tobacco smoke have 1.4 times more risk to develop COPD than those not exposed.13
  • If you have ever used an e-cigarette (vape), even if you have stopped, you have a 76.6 % higher chance of developing COPD than those who have never vaped.14

Exposure to irritants

People who work in an environment with high levels of dust, fumes, vapours and gases are also severely at risk of developing COPD.

Examples of the types of elements shown to cause COPD from occupational exposure includes:15
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Coal dust

people may even be at risk after they stopped working in such an environment for a long time

Organic dust

as often found in the textile industry or paper mills

Asbestos and cement

Chemicals

from welding fumes, cadmium and other irritants

Gases

such as nitrous fumes, sulphur dioxide and chlorine often obtained from cleaning agents

Coal dust

people may even be at risk after they stopped working in such an environment for a long time

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Organic dust

as often found in the textile industry or paper mills

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Asbestos and cement

Tobacco smoke is an irritant that often aggravates Asthma; as does air pollution, strong odours or
fumes.

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Chemicals

from welding fumes, cadmium and other irritants

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Gases

such as nitrous fumes, sulphur dioxide and chlorine often obtained from cleaning agents

Certain occupations have been identified to be at risk of exposure to irritants, which includes:15
  • Cement workers and cement/coal miners
  • Iron, steel and ferrochrome workers
  • Building services
  • Records processing and distribution clerks
  • Construction and trade workers
  • Mechanic and repair jobs
  • Farming and agriculture workers
  • Repair services/gas station workers
  • Cleaners
  • Spray painters
  • Food products manufacturing
  • Paper mill workers
  • Freight, stock and material handlers
  • Warehouse stock handlers and stackers
  • Highway and tunnel workers
  • Armed forces
  • Gardeners and park keepers
  • Pottery workers
  • Healthcare workers
  • Railroad workers
  • Rubber, plastics and leather manufacturing workers
  • Sculptors, painters, engravers and art restorers
  • Silicon carbide smelter workers
  • Welders
  • Wood workers
Studies show that 14 % of people exposed to such irritants develop COPD.15

Gender and weight

Men are twice as likely to develop COPD than women.6 People who are underweight (BMI <25 kg/m2) are more at risk of developing COPD than those with normal weight, and may be at risk of poorer outcomes in severe disease.12,16

Other causes

Below are some of the other main causes of COPD:4,12
  • Genetic disorders (some are very rare)
  • Being born prematurely or with a low birthweight
  • Repeated lung infections during childhood
  • Severe asthma
  • Asthma combined with smoking

Find out more

About COPD and its symptoms

Chronic Obstructive Pulmonary Disease (COPD) is a term that involves two conditions called chronic bronchitis (bron-ki-tis) and emphysema. A person could have only one or both of these conditions at the same time.8

Diagnosis of COPD

Many people have early-stage COPD but are not yet aware of it, and they are therefore not proactively protecting their lungs from further damage. Up to 7 in every 10 people who experience persistent breathing issues have never been diagnosed.15