National Institutes of Health

The National Institutes of Health (NIH) is a leading biomedical research facility in the United States, operating under the Department of Health and Human Services. Established in 1887 and based in Bethesda, Maryland, NIH is the primary agency responsible for biomedical and health-related research in the country. It comprises 27 separate institutes and centers, each focusing on different disciplines within biomedical science. NIH conducts its own scientific research through the Intramural Research Program and provides significant funding for research at external institutions via the Extramural Research Program. With a workforce that includes 1,200 principal investigators and over 4,000 postdoctoral fellows, NIH has been instrumental in major medical breakthroughs, such as the development of vaccines for hepatitis and human papillomavirus, as well as the discovery of treatments for various health conditions. As the world's largest source of medical research funding, NIH continues to advance scientific knowledge and contribute to public health improvements.