Insomnia Could Spike Stroke Risk By 28 Per Cent, Study Warns
New research warns that struggling to fall asleep regularly could spike your risk of stroke by over 25 per cent and heighten chances of developing Alzheimer's disease. Insomnia is a common disorder defined by trouble dozing off or failing to get enough rest to feel refreshed. It often drags down mood, memory, and focus. Up to one in three adults across the UK likely suffer from this condition yet receive no formal diagnosis.
Italian researchers have now tied the disorder to an 28 per cent jump in hospitalisation risk and a 26 per cent greater chance of stroke. These numbers highlight why treating insomnia matters for overall brain health. 'Insomnia deserves attention as a warning sign of the status of brain and mental health,' stated Dr Luca Vignatelli, a neurologist at the Institute of Neurological Sciences of Bologna who co-authored the paper. He added that anyone with this disorder faces higher risks for dementia or stroke. His message is clear: doctors must spot and treat sleep issues as part of a broader strategy to lower disease risk.
The study published in Sleep Medicine Reviews examined health records from more than 1.3 million people drawn from two major medical databases. Results confirmed that insomnia carriers had a 26 per cent elevated stroke risk, though numbers varied slightly between different studies. Around 100,000 Britons suffer strokes annually, and the condition claims roughly 35,000 lives each year.
Researchers did not pinpoint a single cause but noted chronic sleep loss links to high blood pressure, a top stroke driver. Levels of C-reactive protein, an inflammation marker, also climb when people miss out on seven to nine hours of sleep. This puts extra strain on the heart. The team reviewed three existing studies and found insomnia patients are 28 per cent more likely to be admitted to hospital for any reason.

Beyond these stats, the European Academy of Neurology funded review connected insomnia with dementia and Alzheimer's disease. However, experts stressed these findings show a link, not proof that sleeplessness directly causes stroke or cognitive decline. 'Sleep should be part of the conversation about brain health at every age,' said Professor Stefan Seidel. He called for raising awareness about treatment and ensuring sleep appears in community, school, and workplace programs.
Previous work shows six to eight hours nightly reduces risks for high blood pressure, dementia, and stroke. During deep rest, the brain sweeps away waste products built up during the day. Poor sleep consistently may block this cleanup process, fueling cognitive decline over time. Another recent study of 95,000 UK adults found those with more REM sleep faced lower odds of 83 diseases.
Fixing insomnia often starts with better hygiene like dark quiet rooms and regular exercise. Avoiding screens before bed helps too. Sleep aids, cognitive behavioural therapy, and sleeping pills can assist where needed. Ignoring this issue risks long-term harm to the public. We must act now because sleep disturbances threaten so many lives.
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