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Medical Daily
Medical Daily
Dorothy Brooks

Sleeping More Than 8.5 Hours Every Night Is Tied to an Alzheimer's Blood Marker: What That Actually Means

Why This Matters

For years, public health messaging about sleep and brain health has focused on not getting enough. Short sleep — six hours or less — has been linked to elevated dementia risk in multiple studies. The message has been straightforward: protect your brain, sleep more.

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