There is no known cause for asthma but there are many factors that are involved. These factors include:
- Genetic Factors: tends to run in families and many people with asthma also have other allergic conditions
- Environmental factors: many children grow up in carpeted homes which don’t allow much airflow and this encourages fast breeding of dust mites. Many children spend a lot time playing indoors where there are dust mites and no fresh air. Also being exposed to cigarette smoke inclines children to developing asthma and makes their symptoms more severe.
- Dietary changes: change in diet, such as higher intake of processed food, higher salt intake, lower antioxidant intake and lack of omega-3 fatty acids. This all contributes to the development of asthma.
- Lack of exercise: a decrease in exercise results in less stretching of airways
- Occupational exposure: Chemicals in workplaces such as dusts, gases, moulds and pollens, can cause asthmatic irritants in adults
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