Sleep Boosts Brain Cell Numbers, University of Wisconsin-Madison Study
Scientists believe they have discovered a new reason why we need to sleep - it replenishes a type of brain cell. Sleep ramps up the production of cells that go on to make an insulating material known as myelin which protects our brain's circuitry. The findings, so far in mice, could lead to insights about sleep's role in brain repair and growth as well as the disease MS, says the Wisconsin team.
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