About NIH

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 lives.

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Building One on the NIH campus in Bethesda, Maryland
Who We Are

NIH is made up of 27 Institutes and Centers, each with a specific research agenda, often focusing on particular diseases or body systems. The NIH headquarters, known as the “NIH campus,” are located in Bethesda, Maryland.

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What We Do

NIH’s mission is to seek fundamental knowledge about the nature and behavior of living systems and the application of that knowledge to enhance health, lengthen life, and reduce illness and disability.

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NIH Virtual Tour screenshot
Virtual Tour of the NIH Campus

Explore the Bethesda campus and how NIH turns discovery into health.

Virtual Tour of the NIH Campus

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Google map showing the location of the NIH headquarters in Bethesda, Maryland
Visitor Information

Directions, maps, parking information, and more.

Visitor Information

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Frequently Asked Questions

Answers to frequently asked questions about the NIH.

Frequently Asked Questions

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Contact Us

How to contact NIH by email, phone, or mail.

Contact Us

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Get Involved at NIH

NIH encourages and depends on public involvement in federally supported research and activities.

Get involved

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Jobs at NIH

We’re looking for driven and inspired people to join our team.

Discover your future