Diseases and Conditions

Occupational asthma

Risk factors

The intensity of your exposure increases your risk of developing occupational asthma. In addition, you will have increased risk if:

  • You have existing allergies or asthma. Although this can increase your risk, many people who have allergies or asthma do jobs that expose them to lung irritants and never have symptoms.
  • Allergies or asthma runs in your family. Your parents may pass down a genetic predisposition to asthma.
  • You work around known asthma triggers. Some substances are known to be lung irritants and asthma triggers.
  • You smoke. Smoking increases your risk of developing asthma if you are exposed to certain types of irritants.

High-risk occupations

It's possible to develop occupational asthma in almost any workplace. But your risk is higher if you work in certain occupations. Some of the riskiest jobs and the asthma-producing substances associated with them include the following:

Jobs Asthma-producing substances
Adhesive handlers Chemicals
Animal handlers, veterinarians Animal proteins
Bakers, millers, farmers Cereal grains
Carpet makers Vegetable gums
Metal workers Cobalt, nickel
Food production workers Milk powder, egg powder
Forest workers, carpenters, cabinetmakers Wood dust
Hairdressers Dyes
Health care workers Latex and chemicals
Pharmaceutical workers, bakers Drugs, enzymes
Seafood processors Herring, snow crab
Spray painters, insulation installers, plastics and foam industry workers, welders, metalworkers, chemical manufacturers, shellac handlers Chemicals
Textile workers Dyes, plastics
Users of plastics or epoxy resins, chemical manufacturers Chemicals