NHANES - National Health and Nutrition Examination Survey Homepage

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An official website of the United States government

National Health and Nutrition Examination Survey

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Survey Participants

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If you were selected, learn more about participating

Survey Data and Documentation

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Access data, documentation & response rates

Publications and Products

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View health and nutrition reports & CDC Growth Charts

Data Analysis Tutorials

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Review step-by-step guidance on using NHANES data

Survey Participants

Picture of group of diverse people

If you were selected, learn more about participating

Publications and Products

Image of charts

View health and nutrition reports & CDC Growth Charts

Survey Data and Documentation

Picture of computers

Access data, documentation & response rates

Data Analysis Tutorials

image of woman working on computer

Review step-by-step guidance on using NHANES data

Announcement of the release of the NHANES Plan and Operations manual

Population-Based Survey Experience in Multimode Health and Nutrition Data Collection – Plenary

Low Resolution Video

Population-Based Survey Experience in Multimode Health and Nutrition Data Collection – Panel

Low Resolution Video

Explore the new NHANES Interactive data visualization dashboards.

Image of new Extended BMI charts announcement

National Report on Human Exposure to Environmental Chemicals

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What's New

Data Release

DNA Methylation – Epigenetic Biomarkers (1999-2002)
Polychlorinated dibenzo-p-dioxins (PCDDs), Dibenzofurans (PCDFs) & Coplanar Polychlorinated Biphenyls (cPCBs) – Pooled Samples (DOXPOL_I 2015-2016)

Data Release – Limited Access Data

DNA Methylation – Normalized and pre-processed (1999-2002)

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