Asthma attacks more common for some women taking the progesterone-only pill, study finds

A major study of around 260,000 women shows that taking the progesterone-only contraceptive pill can increase asthma attacks in some women. The research, published in ERJ Open Research, shows an increase in asthma attacks in women with asthma who are taking the progesterone-only pill and either aged under 35, or using fewer asthma treatments, or with a type of asthma called eosinophilic asthma.

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