Mind mystery
Alzheimer's disease appears to have multiple causes, and scientists are slowly unraveling them
A century after Alois Alzheimer identified the debilitating dementia that carries his name, scientists are still trying to determine what causes the disease in old age. Their quest takes on increasing urgency, with predictions that unless a cure is found, the number of Americans with the disease will rise from about 4.5 million now to 13 million in 2050. (Full article: 1318 words)
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