"African-Americans are at a higher risk for Alzheimer's disease."

"This is of even greater concern for African-Americans, who are two times more likely to develop late-onset Alzheimer's disease than whites and less likely to have a diagnosis of their condition, resulting in less time for treatment and planning. By working together, we hope to reduce the risk factors and reverse the growing trend of Alzheimer's disease among African-Americans."

http://www.alz.org/africanamerican/

Wow - I fully did not know this. How is this not further discussed and researched?