Social, Behavioral, and Biological Linkages Across the Life Course
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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.
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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. Over the years, Add Health has collected rich demographic, social, familial, behavioral, psychosocial, cognitive, and health survey data from participants and their parents; a vast array of contextual data from participants’ schools, neighborhoods, and geographies of residence; and in-home physical and biological data from participants, including genetic markers, blood-based assays, anthropometric measures, and medications. Ancillary studies have added even more data over the years. Data from the project are available in various forms and have been analyzed in thousands of publications in peer-reviewed journals.
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Key Resources
August 21, 2024
Important and Exciting Announcement for Add Health Data Restricted-Use Contract Holders
In collaboration with the UNC Chief Information Officer and the Research Computing Unit at the University of North Carolina - Chapel Hill, Add Health is...
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August 2, 2024
Add Health Study featured in The Guardian
A recent article published by The Guardian references a study conducted by Add Health Deputy Director, Dr. Allison Aiello, and fellow researchers exploring the impacts...
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June 13, 2024
New Data Release – Wave V Contextual Despair
The following data are now available to Add Health contract researchers. Wave V Contextual Despair This contextual data set focuses on the social, political, and...
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