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Brain may flush out toxins during sleep

From the National Institutes of Health:

A good night’s rest may literally clear the mind. Using mice, researchers showed for the first time that the space between brain cells may increase during sleep, allowing the brain to flush out toxins that build up during waking hours.  These results suggest a new role for sleep in health and disease.  The study was funded by the National Institute of Neurological Disorders and Stroke (NINDS), part of the NIH.

For centuries, scientists and philosophers have wondered why people sleep and how it affects the brain.  Only recently have scientists shown that sleep is important for storing memories.  In this study, Dr. Nedergaard and her colleagues unexpectedly found that sleep may be also be the period when the brain cleanses itself of toxic molecules.

For the full NIH news article: http://1.usa.gov/17RLxqn

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