The National Institutes of Health (NIH), a part of the U.S. Department of Health and Human Services, is the nation’s medical research agency — making important discoveries that improve health and save …

NIH Virtual Tour: National Library of Medicine NLM is the world's largest biomedical library and a national resource for health professionals, scientists, and the public.

The NIH is responsible for many scientific accomplishments, including the discovery of fluoride to prevent tooth decay, the use of lithium to manage bipolar disorder, and the creation of vaccines …

The National Institutes of Health (NIH) is the primary Federal agency for conducting and supporting medical research.

Meeting QC criteria for an extension request does not mean that the National Institutes of Health (NIH) has determined that the request demonstrates good cause. The process for review and granting of …

Find information on health conditions, wellness issues, and more in easy-to-read language on MedlinePlus, the up-to-date, trusted health information site from the NIH and the National Library of …

Jul 12, 2026 · National Institutes of Health (NIH), agency of the United States government that conducts and supports biomedical research into the causes, cure, and prevention of disease.