In the four-year study period, the researchers found, insomnia increased the tendency of a person hospitalized due to a stroke. They noted, the increased risk was 54%. The risk of stroke in people with insomnia aged 18-34 years is eight times higher that their peers who get good sleep.
Demetrius Lopes, Director of Interventional Cerebrovascular Center at Rush University in Chicago, and a spokesperson for the American Heart Association, said, the attention of researchers was initially on high blood pressure, obesity, and cholesterol, the risk factors of stroke.
"Lack of sleep can also be dangerous, especially at a young age." He said.
The study published in the journal Stroke compared randomly the medical history of more than 21,000 people with insomnia and 64,000 people without insomnia in Taiwan. All participants were diagnosed with no stroke or sleep apnea previously.
Having followed for four years, 583 people with insomnia and 962 people without insomnia were recorded hospitalized due to a stroke. Researchers' analysis showed, after other risk factors were included, people with insomnia were at increased risk of stroke compared to those with good sleep quality.
A researcher of the study, Ya-Wen Hsu from Chia Nan University, said, insomnia also affected increased risks of stroke. That is, the more often a person experiences insomnia, the higher the increase in stroke risk he faces.
People with insomnia are also likely to have other risk factors of stroke, including diabetes, high blood pressure, and cholesterol. Nonetheless, the study didn't demonstrate a casual relationship between insomnia and stroke.
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