A number of factors are thought to increase your chances of developing asthma. These include:

  • Having a blood relative (such as a parent or sibling) with asthma
  • Having another allergic condition, such as atopic dermatitis or allergic rhinitis (hay fever)
  • Being overweight
  • Being a smoker
  • Exposure to secondhand smoke
  • Exposure to exhaust fumes or other types of pollution
  • Exposure to occupational triggers, such as chemicals used in farming, hairdressing and manufacturing
Oct. 17, 2015