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 …

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.

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.

4 days ago · Explore NIH grant funding data, including funding trends, funding by IC, new and competing awards, and multiyear funding, updated throughout the fiscal year.

Jun 16, 2008 · NIH-funded research has helped launch a first-in-human clinical trial exploring partial epigenetic reprogramming—a treatment strategy aimed at reversing cellular aging in the eye.

Apr 30, 2026 · NIH data show that securing research awards has become more competitive under the second Trump administration than ever before, and more unpredictable.

Mar 21, 2025 · Find science-based health information on symptoms, diagnosis, treatments, research, clinical trials and more from NIH, the nation’s medical research agency.

Apr 14, 2026 · 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 …

Jan 21, 2025 · NIH-funded research has led to breakthroughs and new treatments helping people live longer, healthier lives, and building the research foundation that drives discovery.