For many women, the transition to menopause occurs during one of the most demanding periods of life. Careers may be at full stretch, children may be navigating adolescence or launching into adulthood, parents may be aging and needing more care, and relationships may be carrying the accumulated weight of decades. The hormonal changes of menopause and the stresses of everyday life don’t politely take turns. They arrive together.
And when they occur together, the effects can feel especially challenging. Hormonal changes during menopause can affect the brain in ways that influence sleep, mood, stress sensitivity, “brain fog,” and cognitive function. When chronic stress is added to the mix, these symptoms may become more noticeable or harder to manage.
Research is also finding measurable changes in cognitive function during the menopause transition. A 2026 systematic review and meta-analysis of 26 studies found poorer cognitive outcomes during perimenopause compared with premenopause, particularly in studies that used standardized criteria to define reproductive stage.1
In this article, we’ll look at how stress and hormonal changes may interact and why that matters for the brain, mood, sleep, and cognitive function.
How the Stress Response Works
Before exploring how chronic stress interacts with the menopausal brain specifically, it helps to understand what the stress response is and what it does.
When the brain perceives a threat, whether physical or psychological, it activates the body’s stress-response system. One important part of this system is the hypothalamic-pituitary-adrenal (HPA) axis, which helps regulate the release of cortisol, one of the body’s primary stress hormones. 2
The stress response also increases heart rate, blood pressure, and the availability of glucose for quick energy. These changes prepare the body to respond quickly to a perceived threat.
The fight-or-flight response is designed to help us deal with short-term challenges. The concern is when stress becomes chronic. Instead of returning smoothly to baseline after a stressful event, the body’s stress-response system may have more difficulty regulating itself, including changes in cortisol levels and their normal daily rhythm.
How Menopause Can Change the Stress Response
Estrogen and progesterone influence the brain systems involved in stress, mood, sleep, and cognition. Estrogen interacts with the body’s stress-response system, while progesterone can be converted into allopregnanolone, a neurosteroid that influences the brain’s GABA system. 3
During perimenopause, estrogen and progesterone can fluctuate considerably. After menopause, levels of these hormones are generally lower.
These hormonal changes may influence the body’s stress-response system. Research examining cortisol during the menopausal transition suggests that stress-related physiology may change during this period. 4 This may be why some women may experience everyday stressors more intensely or struggle to manage stressors more during this transition.
How Chronic Stress Can Affect the Brain
Prolonged stress and changes in cortisol signaling can affect brain regions involved in memory, attention, emotional regulation, and stress processing. Research on chronic stress has particularly examined the hippocampus, prefrontal cortex, and amygdala. 2
The Hippocampus: Memory and Learning
The hippocampus helps us form and retrieve memories and is particularly sensitive to stress hormones.
Research suggests that prolonged stress and altered cortisol regulation may affect hippocampal structure and function. Some human studies have found associations between chronic stress and differences in hippocampal volume, although these relationships are complex. This does not mean that everyday stress is literally destroying brain cells. 2
These findings may be relevant to some of the cognitive symptoms women describe during perimenopause, sometimes referred to as “brain fog,” such as difficulty forming or retrieving memories or feeling like information simply isn’t sticking the way it used to.
That might look like rereading an email several times, losing your train of thought, or walking into a room and forgetting why you went there.
The Prefrontal Cortex: Focus and Executive Function
The prefrontal cortex helps with attention, planning, decision-making, working memory, and emotional regulation. It is also sensitive to stress-related changes in the brain.
Changes in cortisol and other stress-related signaling can affect prefrontal cortex function, making it harder to maintain focus, hold information in working memory, and regulate emotional responses. 2
Chronic stress can contribute to difficulties with attention, working memory, organization, emotional regulation, and task initiation – some of the same difficulties seen in ADHD. For women who already have ADHD, these changes may make existing symptoms feel more difficult to manage. For women without ADHD, new cognitive symptoms during perimenopause may sometimes resemble symptoms of ADHD.
Having ADHD-like symptoms does not necessarily mean a person has ADHD. When symptoms first appear, understanding when they began and what else may be contributing to them is an important part of an accurate evaluation.
The Amygdala: Stress and Emotional Reactivity
The amygdala helps detect potential threats and plays an important role in emotional responses. The prefrontal cortex helps put those responses into context and regulate them.
Chronic stress may increase amygdala reactivity and affect communication between the amygdala and prefrontal cortex. For some women, this may contribute to feeling more anxious, irritable, emotionally overwhelmed, or quick to react during perimenopause.
These experiences have biological underpinnings. They are not simply a matter of willpower, personality, or a “midlife crisis.”
Sleep: Where Stress and Menopause Intersect
Sleep is one of the places where stress and menopause can intersect most clearly.
Cortisol normally follows a daily rhythm, generally rising toward morning and declining throughout the day. Chronic stress and other factors may be associated with changes to this pattern. 5 Hot flashes, night sweats, and other menopausal symptoms can also interrupt sleep. 6
The effects go beyond feeling tired. Sleep plays an important role in memory consolidation and emotional processing. 7 When sleep is repeatedly disrupted, concentration, memory, and emotional regulation can suffer the following day.
This can create a frustrating cycle: stress can interfere with sleep, poor sleep can make concentration and emotional regulation harder, and those difficulties can make everyday stress feel even more challenging.
The Bottom Line
Menopause does not mean your brain is failing.
Hormonal changes during the menopause transition can affect systems involved in stress, sleep, memory, attention, and emotional regulation. Chronic stress can add another layer of difficulty, especially when sleep is disrupted or existing symptoms become harder to manage.
Understanding what is happening can be the first step toward finding strategies that help. In our next article, we’ll look at practical, evidence-informed ways to support your brain, sleep, and stress response during menopause.
Could Stress Be Affecting How You Feel During Menopause?
If you’re noticing more brain fog, difficulty concentrating, memory changes, irritability, anxiety, or disrupted sleep during perimenopause or menopause, you’re not alone – and these changes are worth paying attention to.
At our Missoula practice, we take an individualized approach to understanding how stress, sleep, attention, and cognitive changes may be affecting your day-to-day life. Neurofeedback may be one option to consider as part of a personalized approach to brain and nervous system regulation.
If you’d like to learn whether neurofeedback may be appropriate for your goals, contact us to schedule a consultation.
This article is for informational purposes only and does not constitute medical advice. Please consult a qualified healthcare provider before making changes to your health regimen during the menopausal transition.
References
- Bangle A, Williams D, Walters J, Nguyen L. Cognitive functioning in perimenopause: An updated systematic review and meta-analysis. Psychol Aging. 2026 May;41(3):303-318. doi: 10.1037/pag0000946. Epub 2025 Oct 9. PMID: 41066270. ↩︎
- Lupien SJ, Juster RP, Raymond C, Marin MF. The effects of chronic stress on the human brain: From neurotoxicity, to vulnerability, to opportunity. Front Neuroendocrinol. 2018 Apr;49:91-105. doi: 10.1016/j.yfrne.2018.02.001. Epub 2018 Feb 5. PMID: 29421159. ↩︎
- Kimball A, Dichtel LE, Nyer MB, Mischoulon D, Fisher LB, Cusin C, Dording CM, Trinh NH, Yeung A, Haines MS, Sung JC, Pinna G, Rasmusson AM, Carpenter LL, Fava M, Klibanski A,
Miller KK. The allopregnanolone to progesterone ratio across the menstrual cycle and in menopause. Psychoneuroendocrinology. 2020 Feb;112:104512. doi: 10.1016/j.psyneuen.2019.104512. Epub 2019 Nov 14. PMID: 31780185; PMCID: PMC6935417. ↩︎ - Woods NF, Mitchell ES, Smith-Dijulio K. Cortisol levels during the menopausal transition and early postmenopause: observations from the Seattle Midlife Women’s Health Study. Menopause. 2009 Jul-Aug;16(4):708-18. doi: 10.1097/gme.0b013e318198d6b2. PMID: 19322116; PMCID: PMC2749064. ↩︎
- Adam EK, Quinn ME, Tavernier R, McQuillan MT, Dahlke KA, Gilbert KE. Diurnal cortisol slopes and mental and physical health outcomes: A systematic review and meta-analysis. Psychoneuroendocrinology. 2017 Sep;83:25-41. doi: 10.1016/j.psyneuen.2017.05.018. Epub 2017 May 24. PMID: 28578301; PMCID: PMC5568897. ↩︎
- Kingsberg SA, Schulze-Rath R, Mulligan C, Moeller C, Caetano C, Bitzer J. Global view of vasomotor symptoms and sleep disturbance in menopause: a systematic review. Climacteric. 2023 Dec;26(6):537-549. doi: 10.1080/13697137.2023.2256658. Epub 2023 Dec 1. PMID: 37751852. ↩︎
- Rawson G, Jackson ML. Sleep and Emotional Memory: A Review of Current Findings and Application to a Clinical Population. Curr Sleep Med Rep. 2024;10:378-385. doi:10.1007/s40675-024-00306-8. ↩︎