Long Nights, Foggy Minds? Oversleeping May Be Linked to Poorer Cognition, Study Shows
New Delhi: Getting too much sleep may be detrimental to brain health, particularly for individuals with depression, according to a new study published in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association. The research, led by the University of Texas Health Science Center at San Antonio, concluded that sleeping nine or more hours a night is linked to poorer cognitive performance, with the strongest negative effects observed in people experiencing depressive symptoms, regardless of whether they were on antidepressants.
The study analyzed data from 1,853 participants in the Framingham Heart Study, a long-term, community-based research initiative overseen by the National Heart, Lung, and Blood Institute. All individuals included were dementia- and stroke-free, aged between 27 and 85, with a mean age of 49.8 years. The research team investigated the interaction between sleep duration, cognitive function, and depression, a known modifiable risk factor for cognitive decline.
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