Insomnia: A Silent Threat Increasing Stroke Risk by 26%
A groundbreaking international health review has issued a severe warning to the countless individuals suffering from sleep disorders: insomnia could be significantly more perilous than previously perceived. This extensive umbrella review, published in Sleep Medicine Reviews, was funded by the European Academy of Neurology (EAN) and co-conducted with MedUni Vienna. It revealed that individuals with insomnia have a 26% higher relative risk of stroke and a 28% increased probability of hospitalization for any cause.
The study analyzed data from over 1.3 million participants across nine studies solely focused on stroke, making it one of the most comprehensive reviews of its kind. In addition to cerebrovascular incidents, the researchers discovered significant correlations between insomnia and dementia (specifically Alzheimer’s disease), depression, and suicidal tendencies. The lead author, Luca Vignatelli of the IRCCS Institute of Neurological Sciences of Bologna, Italy, stressed that insomnia should be viewed as a crucial warning sign for brain and overall health.
It’s crucial to note that the authors warn that the findings demonstrate a correlation, not direct causation — insomnia does not guarantee a stroke, but the data strongly suggests it is a significant health marker that should not be disregarded by doctors and patients. Health experts are now advocating for insomnia to be acknowledged and addressed as part of a broader approach to preventive healthcare.
Source: Medical News Today — October 6, 2026