Aspirin cuts women's asthma risk by 10%

Regular low-dose aspirin cuts the risk of women developing asthma by 10 per cent, according to a large US study.

The findings are from 40,000 women aged 45 and over who took part in the Women's Health Study. None of them had asthma, allergy or serious illness at the start of the study. 

They were randomised to take either 100mg aspirin or a placebo every other day.

Over 10 years, there were 872 new cases of asthma in the aspirin group, compared with 963 in the placebo group. 

The effect was independent of age, menopausal status, exercise levels and smoking.

However, aspirin had no effect on asthma risk in women classified as obese.

Thorax Online 2008

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