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National Health and Nutrition Examination Survey

The National Health and Nutrition Examination Survey (NHANES) is a program of studies designed to assess the health and nutritional status of adults and children in the United States. The survey is unique in that it combines interviews and physical examinations.

Selected Participants

Have you been selected to take part in the National Health and Nutrition Examination Survey?

Information for Health Professionals

Learn about participant involvement and benefits with the National Health and Nutrition Examination Survey

NHANES National Youth Fitness Survey

The NHANES National Youth Fitness Survey (NNYFS) was a one year survey conducted in 2012. The NNYFS collected nationally representative data on physical activity and fitness levels of children and adolescents in the United States through interviews and fitness tests. On September 30, 2013, the first wave of this data was released. To review documentation and download datasets, go to the NNYFS Data and Documentation page.

What's New

Data Release
Updated Data

Electrolytes - Home Urine Collection (HULT_H_R) and Kidney Marker - Home Urine Collection (HUKM_H_R) datasets in the 2013-2014 Limited Access Data were updated to include two new variables: URDDBUHM - number of days between the day of the morning home urine collection and the first 24-hour urine collection; and URDDBUHE - number of days between the day of the evening home urine collection and the first 24-hour urine collection.

The Albumin & Creatinine - Urine data of 2011-2012 and 2013-2014 have been updated to include a new variable: URDACT (Albumin Creatinine Ratio).

The Personal Care and Consumer Product Chemicals and Metabolites (EPHPP_H) dataset in the 2013-2014 cycle has been updated to include two new variables: URXBPF (Bisphenol F) and URXBPS (Bisphenol S).

The Herpes I and II data has been updated to update the variable HSV1. After further review of the original methodology, all the individuals who had previously been coded as indeterminate or missing are now coded as negative.

The documentation and data file Smoking - Cigarette Use (SMQ_H 2013-2014) was updated to include cigarette brand and associated variables.

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