NBCNews.com: Top NBCNews headlines: Space may accelerate Alzheimer's in astronauts

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Space may accelerate Alzheimer's in astronauts Jan 1st 2013, 01:42 Radiation in space might harm the brains of astronauts in deep space by accelerating the development of Alzheimer's disease, a new study on mice suggests. Media files: 121231-space-cosmicray-420p.thumb.jpg

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