Dementia rates heading south

US dementia rates have significantly declined over the past decade, and higher educational attainment may explain some of that trend, say US researchers.

They studied two cohorts of around 10,000 people in 2000 and 2012 and found dementia rates went down from 11.8% to 8.8% over the period, translating into a 24% relative decrease in cases.

Those 65 years or older in 2012 had nearly one extra year of education compared with the 2000 cohort.

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