Severe asthma in adults may be associated with sensitivity to airborne moulds rather than pollens, finds a study in this week’s British Medical Journal.
Researchers used data from 1,132 people with asthma from the European Community respiratory health survey to access whether the severity of asthma is associated with sensitisation to airborne moulds rather than to other allergens, such as pollens and cats. Sensitisation to moulds was significantly associated with severity of asthma, but the team found no association between severity of asthma and sensitisation to pollens or cats.
The small size of fungal spores may allow them to reach the lower airways, suggest the authors. Unlike pollens, moulds are also present through the year with increase in the spore counts during the autumn months.
Furthermore, the level of mould exposure is probably greater because the exposure occurs indoors rather than outdoors and people spend most of their time indoors.
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