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Menopause and Memory

Posted by Julian on 08-10-2026

Healthy Life

Menopause may leave a measurable biological signature that offers clues about women's long-term brain health. Researchers have identified 16 molecules in the blood that change during the menopausal transition and are associated with cognitive decline later in life.

The findings, published in Nature Medicine, suggest that midlife could be an important period for identifying women who may face an increased risk of Alzheimer's disease.

Scientists Identify 16 Blood Markers

Researchers at the University of California, San Francisco, examined how menopause affects biological processes associated with brain ageing.

The initial study involved 80 women in their 40s and 50s. Scientists assessed each participant's stage of menopause using symptoms and hormone measurements, allowing them to investigate changes throughout the transition.

Blood samples were analysed for more than 100 molecules associated with brain health. The researchers identified 16 whose concentrations varied significantly across different stages of menopause.

These changes were more closely associated with hormone levels than with chronological age.

Inflammation-related molecules generally increased as oestradiol levels declined. Other molecules associated with Alzheimer's disease biology became more abundant as follicle-stimulating hormone levels rose.

The researchers subsequently examined data from more than 2,800 women in the UK Biobank, finding similar patterns.

Higher Levels Linked To Alzheimer's Risk

To investigate the possible long-term significance of these molecular changes, the scientists analysed information from almost 12,000 older women across four previous studies.

Women in their 60s and early 70s with the highest concentrations of the identified molecules tended to perform worse on memory and thinking assessments.

They also had a 15% higher risk of developing Alzheimer's disease compared with women with lower concentrations. However, the findings demonstrate an association rather than a direct cause-and-effect relationship.

Kaitlin Casaletto, an associate professor at the UCSF Fein Memory and Aging Center and co-senior author of the research, explained that the team does not believe menopause directly causes dementia. Instead, she suggested that measuring these molecules during midlife could eventually help identify women at greater risk decades before symptoms develop.

Night Sweats May Offer Additional Clues

The researchers also investigated whether common menopausal symptoms were associated with changes in blood markers. Women who experienced night sweats tended to show larger increases in molecules linked to inflammation.

A similar association was observed among older participants who recalled experiencing hot flushes during menopause. These findings raise questions about how hormonal changes, inflammation and menopausal symptoms may relate to long-term brain health.

However, experiencing hot flushes or night sweats does not establish that someone will develop dementia.

Could A Blood Test Predict Dementia?

The research team hopes these findings could eventually contribute to a blood test that helps assess dementia risk during midlife.

Such a test might allow doctors to identify individuals who could benefit from earlier monitoring or preventive interventions.

Further research is essential before the molecular markers can be used in routine medical care. Scientists still need to establish how accurately they predict dementia in individual patients and whether interventions can alter the associated risks.

The researchers are also planning longer-term studies that will follow women throughout menopause using blood tests, brain imaging and cognitive assessments.

Why Midlife Brain Health Matters

Women account for approximately two-thirds of people living with Alzheimer's disease, a difference that cannot be explained entirely by longer average life expectancy.

Understanding the biological changes surrounding menopause may help researchers investigate this disparity. The study highlights menopause as a potentially valuable period for studying brain ageing and identifying early warning signs.

Although a clinical screening test remains a future possibility, the findings offer a promising direction for understanding how women's brain health develops across adulthood.