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Risk Factors

Asthma is common, affecting millions of adults and children. A number of factors are thought to increase the chances of developing asthma. These include:

  • A family history of asthma
  • Frequent respiratory infections as a child
  • Exposure to secondhand smoke
  • Living in an urban area, especially if there's a lot of air pollution external link
  • picture of factory near homes
    Exposure to occupational triggers, such as chemicals used in farming, hairdressing and manufacturing
  • Low birth weight
  • Being overweight


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