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People with high blood pressure who slept for shorter durations were more likely to show poor cognitive function and increased levels of markers of brain aging and injury, a new study has found.
Two new studies indicate the importance of getting a good night's sleep — with one study saying a lack of sleep may be sabotaging the brain’s ability to keep intrusive thoughts at bay.
Additionally, lack of sleep causes increased anxiety-like behaviors and impairs the brain's ability to block out unimportant stimuli when performing tasks requiring attention. Disruptions in important brain circuits and the downregulation of proteins necessary for cognitive stability are the causes of these behavioral abnormalities. [30]
Sleep outside of the REM phase may allow enzymes to repair brain cell damage caused by free radicals. High metabolic activity while awake damages the enzymes themselves, preventing efficient repair. This study observed the first evidence of brain damage in rats as a direct result of sleep deprivation. [42]
A long-term lack of sufficient sleep is linked to dementia and Alzheimer’s, but this new research suggests this is not due to brain clearing during sleep. All mammals sleep, yet we are note ...
Some studies have also shown that the attention network in the brain is particularly affected by lack of sleep, [156] and though some of the effects on attention may be masked by alternate activities (like standing or walking) or caffeine consumption, [157] attention deficit cannot be completely avoided.