Scientists are beginning to understand how the brain flushes out waste products in order to stay healthy and fend off neurological diseases.Two teams of scientists from Washington have uncovered signs that a slow wave of electricity that pulses through the brain during sleep pushes waste products, including the protein closely associated with Alzheimer’s disease, from deep in the brain to its surface.A vein passing through the brain then acts as a pipe to carry waste products out through the barrier that separates the brain and the rest of the body. This deposits them into the bloodstream to be filtered out by the kidneys.
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