A new study suggests that one out of seven Americans over the age of 70 has dementia. Researchers conducted individual assessments of 856 people drawn from an earlier study that included a representative sample of Americans over 50.As they report in the latest issue of Neuroepidemiology, the findings suggest that 3.4 million Americans aged 71 or older suffer from some sort of dementia, including Alzheimer's. This is about 30% higher than earlier estimates.
From the Alzheimer's Reading Room
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