medRxiv [Preprint]. 2024 Jun 25:2024.06.23.24309353. doi: 10.1101/2024.06.23.24309353. ABSTRACT Epigenetic processes, such as DNA methylation, show potential as biological markers and mechanisms underlying gene-environment interplay in the prediction of mental health and other brain-based phenotypes. However, little is known about how peripheral epigenetic patterns relate to individual differences in the brain…