The brain fog during menstruation myth has just been debunked by researchers in Zurich, Switzerland. Research has demonstrated women have the same focus during that time of the month as in the rest of the month.

The days of menstruation are less comfortable, that’s for sure. Symptoms like abdominal cramps, mild or severe, mood swings and sore breasts are still there, for every fertile woman. However, researchers have, with proof, taken down the list brain fog, which has become a myth starting July 4, 2017. That is when the results of the study have been made public and are available for all the curious readers on the Frontiers in Behavioral Neuroscience online journal.

Prof. Brigitte Leeners, of the University of Zurich in Switzerland says: “ As a specialist in reproductive medicine and a psychotherapist, I deal with many women who have the impression that the menstrual cycle influences their well-being and cognitive performance”.

So, she and her team decided to demonstrate that the changes occurring during the menstrual cycle do not impair women’s cognitive abilities.

88 women were enrolled in the study. They were all in their fertile years. Scientists monitored their hormone levels – estrogen, progesterone and testosterone – over a period of a few months.

The results were quite clear: the changes in hormonal levels did not affect:

  • Attention
  • Cognitive bias
  • Working memory

Prof. Brigitte Leeners is hoping for further studies on the matter, that would bring more information on the connection between hormones and brain activity during menstruation. Larger groups of participants would offer more complex results. Also, further studies, on women with hormone disorders, would be a great subject of interest.


Scientists say there is no brain fog during menstruation.
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