Socioeconomic changes predict genome-wide DNA methylation in childhood

Author:

Liu Jiaxuan,Cerutti JanineORCID,Lussier Alexandre A.ORCID,Zhu YiwenORCID,Smith Brooke J.,Smith Andrew D.A.C.,Dunn Erin C.ORCID

Abstract

AbstractChildhood socioeconomic position (SEP) is a major determinant of health and well-being across the entire life course. To effectively prevent and reduce health risks related to SEP, it is critical to better understand when and under what circumstances socioeconomic adversity shapes biological processes. DNA methylation (DNAm) is one such mechanism for how early life adversity “gets under the skin”. Using data from a large, longitudinal birth cohort, we showed that changes in the socioeconomic environment may influence DNAm at age 7. We also showed that middle childhood (ages 6-7) may be a potential sensitive period when socioeconomic instability, reflected in parental job loss, is especially important in shaping DNAm. Our findings highlight the importance of socioeconomic stability during childhood, providing biological evidence in support of public programs to help children and families experiencing socioeconomic instability and other forms of socioeconomic adversity during childhood.

Publisher

Cold Spring Harbor Laboratory

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