Featured News and Research Highlights

July 7, 2026

Persistent Infections and Biological Aging: Evidence from the Add Health Study

Widespread persistent infections have been found to elicit chronic immune activation, with implications for the body’s immune system and biological functions as people age. Using nationally representative data from Waves IV and V of Adult Health, Jennifer Momkius et al. investigated whether these associations extend earlier into adulthood and whether...

June 8, 2026

Former Add Health Director, Kathleen Mullan Harris, this year’s recipient of the American Sociological Association’s Sociology of Population Section Distinguished Career Award

Few scholars have shaped the sociology of population as profoundly as Kathleen Mullan Harris. As Director and Principal Investigator of the National Longitudinal Study of Adolescent to Adult Health (Add Health) from 2004 to 2021, and through her continuing leadership of the Add Health Parent Study, Kathie built one of...

June 2, 2026

Volunteering and Cardiometabolic Outcomes: Evidence from the Add Health Study

Research shows that social determinants of health significantly impact disparities in cardiometabolic diseases, like diabetes, but most of this research does not examine positive determinants. Chen et al. in JAMA Network Open analyzed whether volunteering, as a positive determinant, is associated with metabolic syndrome and diabetes across two different samples...

May 29, 2026

New Wave VI Bio Data Available

Add Health is excited to announce the following data are now available: Wave VI Inflammation and Immune Function: This file contains constructed measures designed to facilitate analysis and interpretation of inflammation and immune function based on venous blood collected via phlebotomy at the Wave VI home exam. Assay results include...