Featured News and Research Highlights

September 16, 2026

Updated Acknowledgement Statement for Restricted-Use Data Contract Holders

To improve identification of the specific restricted-use data agreement under which research was conducted, Add Health is updating its required acknowledgement language. Effective immediately, researchers using Add Health restricted-use data should include their Add Health Restricted-Use Contract number as part of the acknowledgement section in manuscripts, reports, presentations, and other...

September 10, 2026

New Data Now Available from Add Health

Add Health is excited to announce the following data are now available: Wave VI ACA Medicaid ExpansionThe Wave VI ACA Medicaid Expansion data provides the year in which states expanded Medicaid under the Affordable Care Act. These dates are attached to the location in which Add Health participants were living...

September 1, 2026

Wave VII of Add Health is now funded!

We are thrilled to report that the National Institute on Aging, with support from several co-funding NIH institutes, has funded the Wave VII project, which will collect survey, cognitive, home exam, contextual, and administrative data from consenting Add Health participants. Wave VII data collection is slated to begin in summer...

July 22, 2026

Parent Set Bedtimes and Cardiovascular Disease Risk: Evidence from the Add Health Study

Previous research shows that parent-set bedtimes help lower adolescents’ risk of important cardiovascular disease (CVD) risk factors. However, there is a gap in the research regarding whether this practice affects CVD risk factors later in life. Using nationally representative data from Waves I and IV of Add Health, researchers examined...