The National Institutes of Health (NIH) is the U.S. government’s primary medical research agency, responsible for advancing knowledge to improve health and save lives. Comprising 27 institutes and centers, the NIH conducts and supports cutting-edge biomedical research, fosters innovation in scientific discovery, and promotes public health initiatives. The site provides resources on health topics, research funding, clinical trials, and scientific publications, serving as a hub for professionals, researchers, and the general public seeking authoritative health information.