An estimated 5.2 million Americans have
AD. Approximately 200,000 people younger than 65 years with AD comprise the younger onset AD
population; 5 million are age 65 years or older. By mid-century, fueled in large part by the baby boom
generation, the number of people living with AD in the United States is projected to grow by about 9
million. Today, someone in the country develops AD every 67 seconds. By 2050, one new case of AD
is expected to develop every 33 seconds, or nearly a million new cases per year, and the total estimated
prevalence is expected to be 13.8 million.