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Amazing way sleep cleans the brain uncovered

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2013-10-19 12:59

We all know sleep is important for a number of reasons related to optimal health. Now scientists have discovered seeping is a way the body cleans the brain to protect from toxic buildup that might lead to dementia and Alzheimer's disease.

In mouse studies scientists from the Center for Translational Neuromedicine at the University of Rochester Medical Center in New York found when we sleep we gain brain space that in turn aids the removal of brain toxins.

Sleep changes the cellular structure of the brain

Studies have recently shown sleep is important for storing memories. Poor quality sleep is linked to a variety of health conditions that are just beginning to be completely understood.

The new study finds when we sleep the cellular structure of the brain undergoes changes that flushes toxic molecules from the cells.

Maiken Nedergaard, M.D., D.M.Sc., co-director of the Center for Translational Neuromedicine at the University of Rochester Medical Center in New York, and a leader of the study in a press release the brain changes that occur during sleep seem to come from a completely different state.

During sleep the brain undergoes a process akin to plumbing. The study authors say the glymphatic system that is a pathway that clears waste products in the central nervous system may open.

University of Rochester researcher Jeffrey Iliff discusses the brain’s glymphatic system in the video below that was discovered just last year.

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The new study builds on the glymphatic system discovery. When the researchers tested mice by injecting a dye to observe the flow of cerebrospinal fluid they noticed the flow was much better during sleep compared to when the mice were awake.

Dr. Nedergaard in a press release the finding “…suggested that the space between brain cells changed greatly between conscious and unconscious states”.

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