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 (NYFS) collects data on exercise and the nutrition habits of U.S. youth through interviews and fitness tests. Learn more about participating in this one-of-kind survey.

Notes

• 2007-2010 Sampling Methodology
• Analytic Note Regarding 2007-2010 Survey Design Changes and Combining Data Across other Survey Cycles [PDF – 20 KB]
• Advisory for Vitamin D Data [PDF - 32 KB]
• Advisory for Glycohemoglobin (A1c) Data [PDF - 26 KB]