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
- Dietary Supplement Use 24-Hour - Individual Dietary Supplements, First Day (DS1IDS_H 2013-2014)
- Dietary Supplement Use 24-Hour - Individual Dietary Supplements, Second Day (DS2IDS_H 2013-2014)
- Dietary Supplement Use 24-Hour - Total Dietary Supplements, First Day (DS1TOT_H 2013-2014)
- Dietary Supplement Use 24-Hour - Total Dietary Supplements, Second Day (DS2TOT_H 2013-2014)
- Dietary Supplement Use 30-Day - Individual Dietary Supplements (DSQIDS_H 2013-2014)
- Dietary Supplement Use 30-Day - Total Dietary Supplements (DSQTOT_H 2013-2014)
- Dietary Supplement Database - Blend Information (DSBI 1999-2014)
- Dietary Supplement Database - Ingredient Information (DSII 1999-2014)
- Dietary Supplement Database - Product Information (DSPI 1999-2014)
Updated Data
The Physical Functioning (PFQ_H) file has been updated to include participants 3 to 4 years of age and an additional question (PFQ033) on use of special equipment.
- Physical Functioning (PFQ_H 2013-2014)
The t,t-Muconic acid (URXMUCA) data were withdrawn from the Urinary Volatile Organic Compounds datasets (UVOC_G and UVOCS_G) in the NHANES 2011-2012 cycle, due to an observed issue with the internal standard transition used for quantitation. It was determined that the internal standard quantitation scheme used was not consistent during the 2011-2012 cycle, and the data could not be recalculated, even after the issue was identified and corrected. A detailed analytical note has been included in the dataset. The documentation file and laboratory procedure manual have been updated to reflect the withdrawal of all URXMUCA data.
- Volatile Organic Compounds & Metabolites - Urine (Subsample) (UVOC_G 2011-2012)
- Volatile Organic Compounds & Metabolites - Urine - Special Sample (Subsample) (UVOCS_G 2011-2012)
- Page last reviewed: November 21, 2016
- Page last updated: November 21, 2016
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