Oversleeping is harmful to overall health and increases mortality risk
the verdict
SUPPORTED
the evidence backs this
confidence 75/100
Multiple studies demonstrate that excessive sleep (oversleeping) is linked to adverse health outcomes, including increased mortality risk and higher prevalence of conditions like stroke.
Evidence for · 3
Sleep Duration and Mortality in Women: Effect of Aging and Menopause.
2026 · cited by 0
Highlights a U-shaped link between sleep duration and mortality, showing that excessive sleep is tied to higher death rates.
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More for · 2
Association of hemoglobin-to-red blood cell distribution width ratio (HRR) and sleep duration with stroke: A cross-sectional study from NHANES 2008-2018.
2026 · cited by 0
Observes that long sleep durations are associated with a higher stroke prevalence.
Sleep Duration and Long-Term Mortality After Stroke: A Nationwide Analysis
2023 · cited by 0
Finds that long sleep duration is independently associated with a higher risk of all-cause mortality after stroke.