National Health and Nutrition Examination Survey

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
Publication
Data Release
Data Release – Limited Access Data
Updated Data

2013-2014 and 2015-2016 water and plasma fluoride values less than the limit of detection (LOD) were imputed with the LOD/square root of 2.

Page last reviewed: December 5, 2019