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A new study has found that asthma may be more common in women with irregular periods. The finding adds to the evidence suggesting that female hormones play a part in the development of asthma. The study revealed that women with asthma more often have irregular periods, and researchers point out that this can be linked to hormones rather than asthma medication, as irregular periods were found in asthma sufferers who went untreated. The study used data from 8588 women and found that younger women (aged 25 to 42) with irregular periods were 58% more likely to develop asthma than those with regular periods.
Researchers speculate that this phenomenon may be related to polycystic ovary syndrome (PCOS), which leads to irregular periods and insulin resistance. Asthma may have common risk factors with PCOS, and the findings suggest that asthma could be associated with insulin resistance as well.
Another study showed that hormonal imbalance in women is related to poorer lung function. Researchers point out that women with asthma tend to suffer from asthmatic attacks around the time of their periods.