According to Alzheimer's Orange County, "as the size and proportion of the U.S. population 65 and older continue to expand, the number of Americans with Alzheimer's disease and other dementias will climb each year." The number of persons with Alzheimer's and other dementias is predicted to increase by more than 40% from 2015 to 7.1 million by 2025. With an estimated 13.8 million, this will almost triple by 2050.