The National Institute on Aging (NIA), one of the National Institutes of Health (NIH), leads the federal government effort conducting and supporting research on aging and the health and well-being of older people. NIA is the primary Federal agency for Alzheimer's disease research and provides information on age-related cognitive change and neurodegenerative disease specifically at its Alzheimer’s Disease Education and Referral (ADEAR) Center at www.nia.nih.gov/alzheimers. NIH, the nation's medical research agency, is a component of the U.S. Department of Health and Human Services.