Mixed
Insomnia and its components (daytime dysfunction, fragmentation, latency) are significantly associated with a higher risk of all-cause cognitive disorders and dementia.
If you suffer from chronic insomnia, fragmented sleep, or daytime dysfunction, these are not just annoyances; they are linked to a 27% higher risk of cognitive decline. Prioritizing sleep hygiene and seeking treatment for insomnia may be a crucial strategy for long-term brain health.
Insomnia was significantly associated with 27% higher risk of cognitive disorders (RR=1.27, 95% CI=1.16 to 1.39... Meta-regression revealed that no factors can explain the source of heterogeneity... Among seven components for meta-analyses, four were associated with 7%–16% increased risk of cognitive disorders, including daytime dysfunction... inefficiency... fragmentation... and latency
Why this rating
Based on 51 cohorts, 11,155 reports, with moderate-to-high credibility ratings for insomnia and fragmentation.
Source
Sleep problems and risk of all-cause cognitive decline or dementia: an updated systematic review and meta-analysis
Wei Xu et al. · Journal of Neurology Neurosurgery & Psychiatry · 2019
DOI 10.1136/jnnp-2019-321896
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