According to investigation of researchers at the University of Haukeland, menstrual cycle has adverse effect on respiratory symptoms which includes asthma. During the mid-luteal to mid-follicular phases of the menstrual cycle - between days 10 to 22 of the cycle respiratory symptoms tend to get awful.
The data showed that wheezing symptoms were awful on cycle’s day 10 to 22 and shortness of breath symptoms was most awful on days 7 to 21. There were more coughs just after ovulation days 14 to 16 in attendants with asthma, regular smokers and among those whose BMIs were at least 23.
From the data we can conclude that changes in respiratory symptoms depend on the menstrual cycle phase, and these motifs varied according to body mass index, asthma and smoking status.

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