Does menopause accelerate aging of the brain? A study published in September 2026 invites us to rethink this idea. Among women followed from the premenopausal period through to after menopause, researchers did not observe a significant decrease in gray matter volume. A finding that deserves attention, even as some women may experience memory or concentration difficulties during this time.
Menopause and the Brain: What the Study Reveals
Published on September 8, 2026 in Nature Communications, the study examines structural brain changes across three major hormonal transitions: puberty, pregnancy, and menopause.
To do this, Sophie van ’t Hof and her team analyzed MRIs taken at different times from 1,095 participants. The menopause-focused cohort included 843 women. Among them, 120 were premenopausal at the first MRI and postmenopausal at the second. The others remained in the same category before or after menopause and served as comparison groups.
The finding is precise: researchers did not observe a significant decrease in total or cortical gray matter volume in the group that transitioned through menopause between the two scans. A decrease, however, was observed in the groups that remained premenopausal or postmenopausal.
This absence of measurable decline does not mean the brain isn’t changing. It describes the gray matter volume observed by MRI in the studied groups during the follow-up interval.
Puberty, Pregnancy, Menopause: Three Brain Trajectories
The comparison with puberty and pregnancy makes this result particularly interesting. During these two transitions, the study observes a reduction in gray matter volume in certain cortical regions, notably the prefrontal, parietal, and temporal areas.
However, a change in MRI volume does not by itself prove a loss of cognitive abilities. The authors study brain structure here, not everyday memory test performance.
During the menopausal transition, the trajectory observed is different. The researchers suggest that hormonal fluctuations could contribute to this difference, but they do not have comparable hormonal measurements for all participants. The mechanism remains to be clarified.
And the Mental Fog or “Brain Fog” at Menopause?
Struggling to find the right words, losing track of a conversation, or difficulty concentrating: some women describe these difficulties during perimenopause and menopause. The study’s findings do not challenge their experiences.
Gray matter volume does not by itself capture how the brain functions. Moreover, night sweats, insomnia, fatigue, or mood disturbances can weigh on daily attention. You can also read our article to better distinguish normal forgetfulness from memory problems that warrant attention.
If these difficulties become frequent, worsen, or interfere with daily life, talk to a healthcare professional. They can explore other possible causes and offer tailored care. Menopause symptoms, including sleep disturbances, likewise deserve a clinical discussion.
A Promising Lead, but Not Proof of Protection
The authors discuss the possibility of a temporary slowing of the age-related decline in gray matter. They describe this interpretation as preliminary: direct comparisons needed to confirm a difference in trajectories between groups are not statistically significant.
Other limitations call for caution. Menopausal status was self-reported by participants, MRIs were not all performed at the same distance from the transition, and hormonal data were not harmonized across cohorts. The study also cannot say whether the observed variations later influence memory or the risk of neurological disease.
These results therefore open a new research question: what exactly happens in the brain more precisely during perimenopause? To answer it, more women will need to be followed, their hormone levels measured, and their symptoms and cognitive abilities studied as well.
In the meantime, there is no reason to reduce menopause to a scenario of inevitable brain decline. Taking care of sleep, staying physically active within one’s possibilities, and seeking help when symptoms weigh on daily life remain practical steps. Also see our tips for continuing to stay active after age 50.
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Article updated September 2026
Ethan Hartwell
I break down everyday products to understand what they truly contain and what they imply. My goal is simple: make information clear and useful so people can make more responsible choices without complexity or unnecessary noise.
