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How does sleep time affect dementia?

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There appears to be a U-shaped curve when it comes to sleep length and cognitive decline. That means problems show up if you sleep too little or too much. But a lack of sleep is more likely to raise your chances of dementia.

From: Sleep Problems and Dementia WebMD Medical Reference

SOURCES:

Seminars in Neurology : “Sleep Disturbance, Cognitive Decline, and Dementia: A Review.”

International Journal of Molecular Sciences : “Is Sleep Disruption a Cause of Consequence of Alzheimer’s Disease? Reviewing Its Possible Role as a Biomarker.”

Alzheimer’s Association: “Sleep Issues and Sundowning,” “Treatments for Sleep Changes.” 

American Physiological Society : “Beyond the sleep-amyloid interactions in Alzheimer’s disease pathogenesis.”

Frontiers in Neuroscience: “Sleep Disorders Associated With Alzheimer’s Disease: A Perspective.”

BMC Psychiatry : “Risk of dementia in patients with primary insomnia: a nationwide population-based case-control study.”

JAMA : “Sleep disordered breathing, hypoxia, and risk of mild cognitive impairment and dementia in older women.”

Alzheimer’s Society: “Sleep and dementia risk.”

Mayo Clinic: “Obstructive sleep apnea.”

Alzheimer’s & Dementia : “Sleep characteristics and risk of dementia and Alzheimer’s disease: The ARIC Study.”

Basic and Clinical Neuroscience : “Tau Pathology of Alzheimer Disease: Possible Role of Sleep Deprivation.”  

Reviewed by Brunilda Nazario on March 17, 2020

SOURCES:

Seminars in Neurology : “Sleep Disturbance, Cognitive Decline, and Dementia: A Review.”

International Journal of Molecular Sciences : “Is Sleep Disruption a Cause of Consequence of Alzheimer’s Disease? Reviewing Its Possible Role as a Biomarker.”

Alzheimer’s Association: “Sleep Issues and Sundowning,” “Treatments for Sleep Changes.” 

American Physiological Society : “Beyond the sleep-amyloid interactions in Alzheimer’s disease pathogenesis.”

Frontiers in Neuroscience: “Sleep Disorders Associated With Alzheimer’s Disease: A Perspective.”

BMC Psychiatry : “Risk of dementia in patients with primary insomnia: a nationwide population-based case-control study.”

JAMA : “Sleep disordered breathing, hypoxia, and risk of mild cognitive impairment and dementia in older women.”

Alzheimer’s Society: “Sleep and dementia risk.”

Mayo Clinic: “Obstructive sleep apnea.”

Alzheimer’s & Dementia : “Sleep characteristics and risk of dementia and Alzheimer’s disease: The ARIC Study.”

Basic and Clinical Neuroscience : “Tau Pathology of Alzheimer Disease: Possible Role of Sleep Deprivation.”  

Reviewed by Brunilda Nazario on March 17, 2020

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