Key Takeaways

Faulty waste clearance in the brain could be contributing to dementia

People had a higher risk of dementia if their glymphatic system showed signs of impairment

The glymphatic system flushes toxins and waste materials out of the brain

MONDAY, Oct. 27, 2025 (HealthDay News) — Faulty waste clearance in the brain could be contributing to dementia, a new study says.

Impaired movement of cerebrospinal fluid — the clear liquid that cushions and cleans the brain — predicted people’s risk of dementia later in life, researchers reported Oct. 23 in the journal Alzheimer’s & Dementia .

These waste clearance problems appear linked to heart health risk factors that damage blood vessels in the brain, researchers noted.

The study focused on the glymphatic system, which flushes ce

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