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Published online 2 December 2005 | Nature | doi:10.1038/news051128-14
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Beat Alzheimer's with exercise
Study shows how exertion keeps brain cells healthy in mice.
Exercise helps to flush a toxic molecule from the brain and causes a beneficial one to move in and protect nerve cells, research on mice shows. The discovery might help to explain why staying fit and keeping mentally active seem to fend off Alzheimer's disease in humans.
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