896 women in the CAN-PROTECT analysis
74% had perimenopause symptoms, around four each
88% of those reported hot flashes

The headline, and what is under it

You see "menopause raises dementia risk" in a headline and your stomach drops. You have had brutal hot flashes for two years, and now the internet is telling you to worry about your brain.

The actual study is more careful than the headline, and the difference matters for what you do next.

What the study found

Researchers looked at 896 women, average age 64, and asked about the symptoms they had during perimenopause. Most had several, with hot flashes and night sweats topping the list.

Women who reported more perimenopausal symptoms tended to show more cognitive and mild behavioral changes later, the kind that count as early risk markers for dementia.

Research note

The CAN-PROTECT study found symptom burden, not any single symptom, tracked with later cognitive and behavioral markers. The symptoms ranged across vasomotor changes, sleep problems, mood shifts and brain fog.

What it does not prove

This is where it gets genuinely complicated, and most coverage skips it. The study is observational and built on women recalling symptoms from years earlier, so it cannot show that symptoms caused later changes.

Symptom burden might be a marker of underlying vulnerability rather than the cause of it. There is no proven cause-and-effect link yet.

What you can actually do

Symptom burden might be a signal worth heeding, not a sentence. The useful response is not fear, it is getting your symptoms and your heart taken seriously.

Do not white-knuckle through disruptive hot flashes or sleepless nights. Treating symptoms, including a conversation about hormone therapy where appropriate, plus protecting cardiovascular health, sleep and movement, are the levers that genuinely support the aging brain.

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When to see a doctor

Disruptive perimenopause symptoms are worth a proper menopause-care conversation, not endurance. Memory changes that interfere with daily life, or that worry you, should be evaluated on their own rather than dismissed as "just menopause."

Medical disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.

References

  1. Beis D, et al. Menopausal symptom burden as a predictor of mid- to late-life cognitive function and mild behavioral impairment: a CAN-PROTECT study. PLoS One / CAN-PROTECT. 2024. PMC
  2. Cognitive and behavioral decline predicted by perimenopausal symptoms: A CAN-PROTECT study. 2024. PMC
  3. The Conversation. Menopause symptoms may be critical to understanding Alzheimer's risk in women. 2025. Link