Internalizing symptoms associate with the pace of epigenetic aging in childhood

Marieke S. Tollenaar, Roseriet Beijers, Elika Garg, T. T.Thao Nguyen, David T.S. Lin, Julia L. MacIsaac, Idan Shalev, Michael S. Kobor, Michael J. Meaney, Kieran J. O'Donnell, Carolina de Weerth

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Childhood psychiatric symptoms may be associated with advanced biological aging. This study examined whether epigenetic age acceleration (EAA) associates with internalizing and externalizing symptoms that were prospectively collected across childhood in a longitudinal cohort study. At age 6 buccal epithelial cells from 148 children (69 girls) were collected to survey genome-wide DNA methylation. EAA was estimated using the Horvath clock. Internalizing symptoms at ages 2.5 and 4 years significantly predicted higher EAA at age 6, which in turn was significantly associated with internalizing symptoms at ages 6–10 years. Similar trends for externalizing symptoms did not reach statistical significance. These findings indicate advanced biological aging in relation to child mental health and may help better identify those at risk for lasting impairments associated with internalizing disorders.

Original languageEnglish (US)
Article number108021
JournalBiological Psychology
StatePublished - Feb 2021

All Science Journal Classification (ASJC) codes

  • General Neuroscience
  • Neuropsychology and Physiological Psychology


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