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Story summary
- A study in Neurology shows chronic insomnia raises the risk of mild cognitive impairment or dementia by 40%, equating to 3.5 years of brain aging.
- Among over 2,750 cognitively healthy adults, 14% with insomnia developed cognitive issues, compared to 10% without.
- Insomnia correlates with brain changes linked to Alzheimer’s disease.
- Those with the APOE ?4 gene faced greater cognitive decline due to insomnia.
- Experts stress treating insomnia to safeguard brain health and enhance cognitive function.
