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flag Chronic insomnia raises dementia risk by 40% in older adults, accelerating brain aging.

flag Chronic insomnia, defined as difficulty sleeping for at least three nights a week over three months, increases the risk of cognitive decline and dementia by 40% in older adults, according to a study published in Neurology. flag It accelerates brain aging by about 3.5 years and affects brain structures linked to Alzheimer's disease. flag Cognitive behavioral therapy for insomnia (CBT-I) and maintaining regular sleep schedules are recommended to preserve cognitive function.

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