University of California, Berkeley sleep scientists say that deep sleep might help alleviate some of dementia’s most devastating outcomes. Deep sleep may help protect against memory decline in older adults with high Alzheimer's disease pathology, acting as a cognitive reserve factor against beta-
to forecast a faster rate of future beta-amyloid buildup in the brain, after which dementia is more likely set in.to shore up a person’s resilience to severe brain pathology — essentially keeping the mind sharp, despite the decreased brain health. These are called cognitive reserve factors. However, most of them, such as past years of education or the size of one’s social network, cannot be easily changed or modified retroactively.
“If the findings supported the hypothesis, it would be thrilling, because sleep is something we can change,” he added. “It is a modifiable factor.” In their analysis, the researchers went on to control for other cognitive reserve factors, including education and physical activity, and still sleep demonstrated a marked benefit. This suggests that sleep, independent of these other factors, contributes to salvaging memory function in the face of brain pathology. These new discoveries, they said, indicate the importance of non-REM slow-wave sleep in counteracting some of the memory-impairing effects of beta-amyloid deposits.
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