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.
The research reveals another risk that manned deep-space missions to places such as Mars or the asteroids could pose, scientists added.
"This study shows for the first time that exposure to radiation levels equivalent to a mission to Mars could produce cognitive problems and speed up changes in the brain that are associated with Alzheimer's disease," study author Kerry O'Banion, a neuroscientist at the University of Rochester Medical Center, said in a statement.
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