Current Research
Social Epigenetics and the Embodiment of Early Environments. Epigenetic processes are responsive to experiences during development and play important roles in regulating gene expression. A focus on epigenetics in community-based studies encourages us to reconceptualize the human genome as a dynamic substrate that incorporates information from the environment to alter its structure and function—an approach that moves beyond simplistic “nature vs. nurture” and “DNA as destiny” metaphors. Several studies are investigating epigenetic signatures of socioeconomic adversity early in life, epigenetic modifications to inflammatory genes as a mechanism linking early environments with inflammation in adulthood, and the social and ecological factors that predict gene expression.
Pathways Linking Social Inequalities, Inflammation, and Health Within and Across Generations. Inflammation is an important part of normal immune function, but excessive or chronic activation of inflammation contributes to adverse birth outcomes, cardiovascular disease, diabetes, and other chronic degenerative diseases. McDade is conducting research in the United States and the Philippines that investigates the social and developmental factors that shape the regulation of inflammation. Recent papers have documented significant impacts of stress, breastfeeding duration, birth weight, and microbial exposures in infancy on inflammation in adulthood. A new project is focusing on the developmental origins of social inequalities in chronic inflammation using data from the National Longitudinal Study of Adolescent Health to Adult (Add Health). The study includes a focus on inflammation during pregnancy as a potential mechanism contributing to the intergenerational transmission of social inequalities and health.
Biomarkers for Population-Based Health Research. The application of minimally invasive, "field-friendly" methods for measuring physiology is an important part of McDade's effort to conduct integrative population-based research on health. He has developed methods for assaying biomarkers in a drop of blood collected from a simple finger prick, and he consults on the implementation of these methods into a number of large, nationally representative health surveys, including the National Longitudinal Study of Adolescent to Adult Health, Health and Retirement Study, and WHO Study on Global Ageing and Adult Health. In 2020, McDade developed the first method for quantifying coronavirus antibodies in finger stick dried blood spot samples to facilitate remote, “no contact” testing of large numbers of people to track viral spread in the community. New methods are focusing on gene expression and biomarkers of dementia.
Cells to Society (C2S): The Center on Social Disparities and Health. Social and cultural contexts are critical determinants of human development and health, but we know very little about the processes or pathways through which they act. Along with colleagues at IPR, McDade has helped establish C2S as a center at Northwestern to serve as catalyst for innovative, multidisciplinary approaches to understanding health disparities.
Selected Publications
McDade, T., C. Ryan, L. Adair, N. Lee, D. Carba, J. MacIsaac, K. Dever, P. Atashzay, M. Kobor, and C. Kuzawa. 2023. Association between infectious exposures in infancy and epigenetic age acceleration in young adulthood in metropolitan Cebu, Philippines. American Journal of Human Biology e23948.
Schrock, J., R. Nusslock, T. McDade, and B. Mustanski. 2023. Trauma history predicts decoupling of C-reactive protein and somatic symptoms: Results from a cohort study of sexual and gender minority youth. Psychosomatic Medicine. DOI: 10.1097/PSY.0000000000001209
Polos, J., S. Koning, T. Hargrove, K. Kershaw, and T. McDade. 2022. Structural racism in school contexts and adolescent depression: Development of new indices for the National Longitudinal Study of Adolescent to Adult Health and beyond. SSM – Population Health. https://doi.org/10.1016/j.ssmph.2022.101237
Koning, S., J. Polos, K. Kershaw, and T. McDade. 2022. Racial inequities in birth weight by maternal age among college-educated mothers: The role of early disadvantage. American Journal of Preventive Medicine https://doi.org/10.1016/j.amepre.2021.12.010.
Aronoff, J., E. Quinn, A. Forde, L. Glover, A. Reiner, T. McDade, and M. Sims. 2022. Associations between perceived discrimination and immune cell composition in the Jackson Heart Study. Brain, Behavior, and Immunity 103: 28–36.
McDade, T., A. Demonbreun, A. Sancilio, B. Mustanski, R. D’Aquila, and E. McNally. 2021. Durability of antibody response to vaccination and surrogate neutralization of emerging variants based on SARS-CoV-2 exposure history. Scientific Reports 11, 17325.
McDade, T., J. Meyer, S. Koning, and K. Harris. 2021. Body mass and the epidemic of chronic inflammation in early mid-adulthood. Social Science & Medicine 281, 114059.
McDade, T., and S. Koning. 2021. Early origins of socioeconomic inequalities in chronic inflammation: Evaluating the contributions of low birth weight and short breastfeeding. Social Science & Medicine 269, 113592.
McDade, T., J. Borja, N. Lee, C. Aquino, T. Barrett, L. Adair, and C. Kuzawa. 2020. C-reactive protein response to influenza vaccination predicts cardiovascular disease risk in the Philippines. Biodemography and Social Biology 65 (1): 88–96.
McDade, T., C. Ryan, M. Jones, M. Hoke, J. Borja, G. Miller, C. Kuzawa, and M. Kobor. 2019. Genome-wide analysis of DNA methylation in relation to socioeconomic status during development and early adulthood. American Journal of Physical Anthropology 169:3–11.
McDade, T., and K Harris, eds. 2018. Biosocial Pathways of Well-Being Across the Life Course. RSF: The Russell Sage Journal of the Social Sciences 4(4).
McDade, T., C. Ryan, M. Jones, J. MacIsaac, A. Morin, J. Meyer, J. Borja, G. Miller, M. Kobor, and C. Kuzawa. 2017. Social and physical environments early in development predict DNA methylation of inflammatory genes in young adulthood. Proceedings of the National Academy of Sciences 114(29): 7611–16.
