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Study, 2009

Does the menstrual cycle phase affect how well women can focus and remember things?

The menstrual cycle affects how well women focus but not memory. Lower estradiol levels seem to reduce your ability to focus.

Early or limited evidence 30 women with regular menstrual cycles

What they did

30 women with regular menstrual cycles took a memory test and a Stroop task (a test of how well you can focus and ignore distractions) at different points in their cycle when hormone levels were low versus high.

What they found

Women's ability to focus was different when estradiol and progesterone levels were low compared to high. Memory performance did not differ between these times. Their mood did not change.

What it means for you

The menstrual cycle affects how well you can focus through a direct effect on the brain, not through mood or memory. This is a small study with only 30 women, and it tested at only two hormone levels, not throughout the full cycle.

30

women studied

2

cycle phases tested

2

tasks tested

About the study

Original title
Menstrual cycle phase effects on memory and Stroop task performance
Authors
Hatta T, Nagaya K
Journal
Archives of sexual behavior
Year
2009
Study design
Study
What was tested
None; natural menstrual cycle phases were observed

Topics