Poor sleep has been linked to the development of dementia and Alzheimer's disease, and now a new study suggests a possible reason why.
that they can predict with reasonable accuracy which brain regions will wither and atrophy in Alzheimer's by identifying the places where tau protein"tangles" have accumulated.
At this point, scientists don't know why tau might build up in the bloodstream of people who've had bad sleep, Cedernaes said. Sleeplessness might also affect the way in which the body clears tau protein from the brain, said Keith Fargo, director of scientific programs and outreach at the Alzheimer's Association.
Another possibility is that tau is released from brain cells when they are damaged, Fargo added. For example,"If a brain cell dies, the tau can spill out of the brain cell," Fargo explained."Maybe what you're seeing is a loss of brain cell integrity if you're not sleeping."
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