Longitudinal changes in the genetic and environmental influences on DNA methylation linked to obesity measures: a 5-year twin study.

ABSTRACT: The reproducibility of obesity-related DNA methylation (DNAm) sites (CpGs) remains low across studies, and the underlying mechanisms involving genetic and environmental contributions require further investigation. In this study, we systematically searched PubMed, EMBASE, and EWAS catalogue for CpGs associated with BMI, waist circumference (WC), and waist-to-hip ratio (WHR) from previous publications, identifying 29 studies with 2,603/892/28 CpGs for BMI/WC/WHR, respectively. Then, based on 1,074 twins from Chinese National Twin Registry, 493/149/8 CpGs were validated for BMI/WC/WHR, controlling for genetic factors. Following this, within the full twin population and a subsample of 308 twins with longitudinal data collected over a 5-year period, structural equation models (SEMs) were used t

SUBMITTER: Hong X 

PROVIDER: S-EPMC12583361 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature