Insomnia Linked to Higher Risks of Stroke, Hospitalisation and Alzheimer's
A new study finds that people with chronic insomnia face a 26% higher chance of stroke and a 28% greater likelihood of hospital admission, as well as an elevated risk of Alzheimer's disease.
An analysis of more than 1.3 million participants from two major medical databases shows that chronic insomnia correlates with a 26% greater risk of stroke and a 28% higher chance of being hospitalised for any reason. The review, funded by the European Academy of Neurology and published in Sleep Medicine Reviews, also links insomnia to increased odds of dementia and Alzheimer's disease. Researchers caution that the findings indicate association, not causation, but argue that insomnia may serve as an early indicator of brain and mental health decline.
Neurologist Luca Vignatelli and Professor Stefan Seidel emphasise the need to integrate sleep assessment into standard medical practice and public health campaigns. They recommend improving sleep hygiene, and where needed, using therapies such as cognitive-behavioural treatment or medication to mitigate the risks. The study adds to existing evidence that adequate sleep—typically seven to nine hours—helps regulate blood pressure, inflammation and brain waste clearance, all factors tied to stroke and cognitive impairment.
Why it matters
Understanding insomnia's link to stroke and dementia can prompt earlier interventions and improve public health outcomes.
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