UCSF Study Links Longer Naps to Nearly Double Dementia Risk in 733 Older Women

3 articles · Updated · Futura · Jun 25

733 women with an average age of 82 were tracked for five years, and those with rising daytime sleepiness and longer, more frequent naps showed nearly double the risk of developing dementia.
Actigraphy and sleep journals found naps grew by 33.1 minutes on average, total sleep by 18.7 minutes, while sleep efficiency fell 6%, tying both heavier daytime sleep and poorer nighttime sleep to higher risk.
By the end of follow-up, 22.4% had mild cognitive impairment and 12.7% had dementia; 44% kept stable sleep patterns, while 21.3% saw marked increases in daytime and nighttime sleep.
The Neurology study does not show whether sleep changes cause dementia or reflect its early onset, but it suggests 24-hour sleep-wake monitoring could help flag risk earlier.
Dementia affected 57 million people worldwide in 2021, with 10 million new cases a year, and Alzheimer’s accounts for 60% to 70% of cases.

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Futura1d ago

UCSF Study: Increased Daytime Sleepiness, Longer Naps Double Dementia Risk in Older Women

Reddit1d ago

A study found that these 3 Common Sleep Habits May Be Aging Your Brain Faster. These lesions are a known marker of accelerated brain aging and higher dementia risk. : r/HotScienceNews

Instagram1d ago

Which of these is most surprising to you?👀 Research shows that sleep disorders and excessive daytime sleepiness are linked to a higher risk of cognitive decline and dementia. Many people brush off

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If an afternoon nap signals dementia, are we misinterpreting a symptom as a warning sign?

Your fitness tracker monitors sleep, but can its data truly predict your future dementia risk?

Excessive Daytime Napping as an Early Marker for Dementia: Biological Mechanisms, Screening Strategies, and Gaps in Diverse Populations

Overview

Excessive daytime napping in older adults often signals changes in napping patterns, which can reflect underlying neurological changes and an accelerated aging process leading to cognitive decline. This connection is linked to the buildup of abnormal proteins in the brain, disrupting regions that regulate sleep and wakefulness. Monitoring sleep patterns is important, as these changes may serve as early, non-invasive markers for cognitive health issues. The report highlights the need for further research to better understand how shifts in napping habits relate to brain health and to develop effective strategies for early detection and intervention.

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