Cohort Studyhigh evidence
Association of sleep duration with Alzheimer's disease and cognition.
Alzheimer's & dementia : the journal of the Alzheimer's Association·July 1, 2026·PMID 42417271
Why it mattersSleep duration is a modifiable factor that may influence brain health. These findings reinforce the importance of assessing sleep patterns in patients at risk for cognitive decline and suggest that both insufficient and excessive sleep could be early markers or contributors to neurodegeneration.
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