The National Institute of Aging (NIA) is a part of the United States of America National Institutes of Health (NIH), which is dedicated to understanding the nature of aging and the aging process, including associated diseases and conditions. Established in 1974, the National Institute of Aging (NIA) conducts and supports biomedical, social, and behavioral research to improve the health and well-being of the geriatric population. Its research agenda covers a broad spectrum, including the biological and medical aspects of aging, neuroscience and Alzheimer’s disease, geriatrics, and the social and behavioral aspects of aging. The National Institute of Aging (NIA) also plays a crucial role in educating the public and health professionals about aging and its unique challenges. Through its comprehensive research and outreach programs, the NIA aims to extend healthy, active years of life for older adults and to offer insights into the aging process that can lead to improved quality of life for people of all ages.