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Alzheimer's affects races differently say researchers

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Alzheimer's disease seems to develop differently in the brains of black patients than in whites, a new study reports. Black people seem more likely to suffer different types of brain changes that also contribute to dementia. Dementia is generally associated with a build-up of substances known as plaques and tangles inside the brain. But, there are other brain changes that can also contribute to dementia, the study authors noted. For example, the brains of people with dementia sometimes contain infarcts -- tiny areas of dead tissue caused by micro-strokes. They also might contain Lewy bodies -- another form of abnormal protein build-up in the brain that's usually associated with Parkinson's disease. Autopsies of black and white Alzheimer's patients revealed that blacks were more likely than whites to experience a mix of dementia-related changes, as opposed to the damage usually associated with "pure" Alzheimer's dementia. Read more