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Exercise can lower Alzheimer’s risk. Scientists may have discovered why

Exercise can strengthen a leaky blood-brain barrier, which may improve brain health and potentially fight dementia, according to an ambitious new mouse study of exercise and neurodegeneration published this month in Cell. Democracy Dies in Darkness Exercise can lower Alzheimer’s risk. Scientists may have discovered why. In an ambitious study, memory and learning abilities improved substantially after exercise among mice with a form of Alzheimer’s disease.

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