Sleep link to Alzheimer's?

September 25, 2009 The link between sleep and dementia was discovered in a study of mice.

Researchers in St. Louis tracked amyloid beta in lab mice. That's a protein that accumulates in the brains of Alzheimer's patients.

The levels of the protein rose while the mice were awake and fell when they slept. Researchers say that indicates a need to treat sleep disorders early, because sleep deprivation may have a long term effect on brain health.

The study was published in the journal Science.

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