National Health and Nutrition Examination Survey

Welcome to NHANES!

picture of diverse group of people

If you have any questions or would like to complete your survey over the telephone, please call toll-free at 1-855-958-0631 and speak to a study representative. Staff are available to take your call Monday - Friday from 9 am - 5 pm EST.

Learn More about NHANES

For more information about NHANES, please visit the NHANES Participant website.

If you have any questions or would like to complete your survey over the telephone, please call toll-free at 1-855-958-0631 and speak to a study representative. Staff are available to take your call Monday – Friday from 9 am – 5 pm EST.
Image of MEC trailer

picture of diverse group of people

Image of MEC trailer

If you have any questions or would like to complete your survey over the telephone, please call toll-free at 1-855-958-0631 and speak to a study representative. Staff are available to take your call Monday – Friday from 9 am – 5 pm EST.
image of diverse group of people
If you have any questions or would like to complete your survey over the telephone, please call toll-free at 1-855-958-0631 and speak to a study representative. Staff are available to take your call Monday – Friday from 9 am – 5 pm EST.

Our Promise of Confidentiality

We take your privacy very seriously. All information that relates to or describes identifiable characteristics of individuals, a practice, or an establishment will be used only for statistical purposes. NCHS staff, contractors, and agents will not disclose or release responses in identifiable form without the consent of the individual or establishment in accordance with section 308(d) of the Public Health Service Act (42 U.S.C. 242m) and the Confidential Information Protection and Statistical Efficiency Act of 2018 (Title III of the Foundations for Evidence-Based Policymaking Act of 2018 (Pub. L. No. 115-435, 132 Stat. 5529 § 302)). In accordance with CIPSEA, every NCHS employee, contractor, and agent has taken an oath and is subject to a jail term of up to five years, a fine of up to $250,000, or both if he or she willfully discloses ANY identifiable information about you.

Our Promise of Confidentiality

We take your privacy very seriously. All information that relates to or describes identifiable characteristics of individuals, a practice, or an establishment will be used only for statistical purposes. NCHS staff, contractors, and agents will not disclose or release responses in identifiable form without the consent of the individual or establishment in accordance with section 308(d) of the Public Health Service Act (42 U.S.C. 242m) and the Confidential Information Protection and Statistical Efficiency Act of 2018 (Title III of the Foundations for Evidence-Based Policymaking Act of 2018 (Pub. L. No. 115-435, 132 Stat. 5529 § 302)). In accordance with CIPSEA, every NCHS employee, contractor, and agent has taken an oath and is subject to a jail term of up to five years, a fine of up to $250,000, or both if he or she willfully discloses ANY identifiable information about you.

Page last reviewed: June 1, 2021