Cohort Studymoderate evidence
Untreated obstructive sleep apnea and accelerated cognitive decline over 10 years.
Alzheimer's & dementia : the journal of the Alzheimer's Association·July 1, 2026·PMID 42445979
Why it mattersUntreated OSA is common in older adults and may accelerate cognitive decline, but short-term trials have not shown clear cognitive benefits from CPAP. This long-term observational study provides evidence that sustained CPAP use could help preserve cognitive function over a decade, informing discussions on sleep health and dementia prevention.
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