Between 1992 and 2002, the percentage of American seniors with
cognitive impairments fell from 12 percent to 8.7 percent, according to
a study of 11,000 individuals over age 70. The study results have been
published in Alzheimer’s & Dementia.
According to reports by The Boston Globe and Bloomberg
News, scientists are unsure what has caused the improved mental acuity,
though they did find a correlation with net worth and education. Of
those participants with memory and other impairments, the more educated
and financially secure they were, the more likely they were to die
quickly—within two years—according to Bloomberg News.
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