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Menopause, Brain Anatomy, Cognition and Alzheimer's Disease

Costantino, M.; Pigeau, G.; Parent, O.; Ziolkowski, J.; Devenyi, G. A.; Gervais, N. J.; Chakravarty, M. M.

2022-10-21 neuroscience
10.1101/2022.10.18.512730 bioRxiv
Show abstract

The menopause transition has been repeatedly associated with decreased cognitive performance and increased incidence of Alzheimers Disease (AD), particularly when it is induced surgically 1,2 or takes place at a younger age 3,4. However, there are very few studies that use neuroimaging techniques to examine the effects of these variables in aggregate and in a large sample. Here, we use data from thousands of participants from the UK Biobank to assess the relationship between menopausal status, menopause type (surgical or natural), and age at menopause with cognition, AD, and neuroanatomical measures derived from magnetic resonance imaging. We find that for brain and cognitive measures, menopausal status, menopause type and age at surgical menopause do not impact the brain; but that there is a positive correlation between anatomy, cognition and age at non-surgical menopause. These results do not align with previous reports in the literature with smaller samples. However, we confirm that both early and surgical menopause are associated with a higher risk of developing AD, indicating that early and abrupt ovarian hormone deprivation might contribute to the development of the disorder.

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