Home

Social, Behavioral, and Biological Linkages Across the Life Course

NIH Message

On March 31, 2025, as a sponsor of this project, NIH requested that the following language be added to this website: This repository is under review for potential modification in compliance with Administration directives.

Home Page

The National Longitudinal Study of Adolescent to Adult Health (Add Health) is a longitudinal study of a nationally representative sample of over 20,000 adolescents who were in grades 7-12 during the 1994-95 school year and have been followed for six waves of data collection to date, most recently in 2022-25.

Home Page

Key Resources

User Guides

Detailed documentation designed to help users understand the study design, data sets, and guidelines for analyzing the data.

Codebooks

PDF codebooks for coding responses and documenting the layout and code definitions of the data files.

Add Health Navigator

Metadata discovery tool to explore and create custom codebooks, as well as provide a wave to wave variable comparison for Waves I-VI.

Public-Use Data Sets

Access and download the public use codebooks and data sets which contain a reduced sample size (Waves I-VI).

Restricted-Use Data Sets

Access the data sets available via restricted-use contract, renew contract, add researchers, and transfer or terminate contract. Data linkages are not allowable with a restricted-use contract.

Ancillary Studies

Submit an application to add new contextual or biological data to the Add Health data sets, including data linkages.

News and Announcements

March 4, 2026

Wave VI Public-Use Data Available

Add Health is pleased to announce the following Wave VI Public-Use Data are now available: Mixed-Mode Survey Data Data Weights Anthropometrics Cardiovascular Measures Demographics Glucose...
Read More
February 11, 2026

Study using Add Health Data Featured in New York Times

Recently featured in The New York Times, a study by R.C. Whitaker et al. used Add Health data to examine the link between adolescents’ sense...
Read More
January 29, 2026

Add Health Attending PAA

Add Health will be at the Population Association of America’s (PAA) Annual Meeting, held May 6–9, 2026, in St. Louis, Missouri. The meeting brings together...
Read More
1 2 3 … 22

© Copyrights, Carolina Population Center
Add Health