This comes from the 2010 report "Alzheimer's Disease Facts and Figures." It finds that black Americans are about 2 times more likely to develop Alzheimer's than whites, and Hispanics face about 1.5 times the risk.
Experts say much of the increase in Alzheimer's is because of increasing high blood pressure and diabetes. That increases the odds of developing Alzheimer's in all populations.
But blacks and Hispanics are particularly vulnerable because the proportion of these two risk factors is higher even still.