CHICAGO: An Indiana University and Regenstrief Institute study is the first to report significantly decreased incidence rates over two decades for Alzheimer’s disease and other dementias in African-Americans. The study is also the first to show that the incidence rate of these conditions in Africans was unchanged over the same period.
In African-Americans in Indianapolis, dementia incidence rates declined significantly from 1992 to 2011. However, there was no noteworthy change in dementia incidence in older Yoruba of Ibadan, Nigeria…