Menstruation doesn't change how your brain works—period

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A new study published in Frontiers in Behavioral Neuroscience today is setting out to change the way we think about the menstrual cycle. While it's often been assumed that anyone who's menstruating isn't working at top mental pitch, Professor Brigitte Leeners and her team of researchers have found evidence to suggest that that's not the case. They examined three aspects of cognition across two menstrual cycles, and found that the levels of oestrogen, progesterone and testosterone in your system have no impact on your working memory, cognitive bias or ability to pay attention to two things at once. While some hormones were associated with changes across one cycle in some of the women taking part, these effects didn't repeat in the following cycle. Overall, none of the hormones the team studied had any replicable, consistent effect on study participants' cognition.

Professor Leeners, team lead, said: "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 ." Wondering if this anecdotal evidence could be scientifically proven - and questioning the methodology of many existing studies on the subject - the team set out to shed some light on this controversial topic.

The study published today uses a much larger sample than usual, and (unlike most similar studies) follows women across two consecutive . The team, working from the Medical School Hannover and University Hospital Zürich, recruited 68 women to undergo detailed monitoring to investigate changes in three selected at different stages in the menstrual cycle. While analysis of the results from the first cycle suggested that and attention were affected, these results weren't replicated in the second cycle. The team looked for differences in performance between individuals and changes in individuals' performance over time, and found none.

Professor Leeners said, "The related to the menstrual cycle do not show any association with cognitive performance. Although there might be individual exceptions, women's cognitive performance is in general not disturbed by hormonal changes occurring with the menstrual cycle."

Professor Leeners cautions, however, that there's more work to do. While this study represents a meaningful step forward, larger samples, bigger subsamples of women with hormone disorders, and further would provide a fuller picture of the way that the menstrual cycle affects the brain. In the meantime, Professor Leeners hopes her team's work will start the long process of changing minds about menstruation.

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More information: Brigitte Leeners et al, Lack of Associations between Female Hormone Levels and Visuospatial Working Memory, Divided Attention and Cognitive Bias across Two Consecutive Menstrual Cycles, Frontiers in Behavioral Neuroscience (2017). DOI: 10.3389/fnbeh.2017.00120
Provided by Frontiers
Citation: Menstruation doesn't change how your brain works—period (2017, July 4) retrieved 14 October 2019 from
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Jul 04, 2017
Among other things, it may be the way the Phys Org writers, or "writers", chose to address the situation, but it still seems strange they would describe the study, or "study", as "setting out to change the way we think about the menstrual cycle". Research, supposedly, is supposed to find the truth, whatever it is, not try to provide a raft of "evidence" and flawed pseudo reasoning that frauds can point to to convince the gullible of a claim! Note, among other things, the technique of cherry picking "three selected cognitive processes". It's reasonable to assume women do not lose long term memory during menstruation, but that doesn't mean many if not most do not experience changes in behavioral responses to situations then. Note, too, the fraudulent technique of following women over two menstrual periods. How do you establish a majority effect by looking at only two examples?

Jul 12, 2017
So, you are saying that burning a person in the crotch with a torch does not affect their ability to focus on more than one thing, neither does it affect their ability to recall what is happeining around them.
You are saying that hitting someone in the leg so hard that it charlie horses and kinks up so bad that the person can not stand, sit or do much more than moan, does not affect the way their brain or mind of attention works.

Umm. Are you mad.

Do your people actually expect anyone to accept that a tazer to the sacrum that lasts for minutes to hours will not affect their thinking?

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