{"id":27004,"date":"2025-07-10T12:59:14","date_gmt":"2025-07-10T07:14:14","guid":{"rendered":"https:\/\/www.revoscience.com\/en\/?p=27004"},"modified":"2025-07-10T12:59:17","modified_gmt":"2025-07-10T07:14:17","slug":"understanding-childhood-maltreatment-and-its-effect-on-biological-aging","status":"publish","type":"post","link":"https:\/\/www.revoscience.com\/en\/understanding-childhood-maltreatment-and-its-effect-on-biological-aging\/","title":{"rendered":"Understanding childhood maltreatment and its effect on biological aging"},"content":{"rendered":"\n
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The plots shown above depict a marked link between a child\u2019s biological age, as determined through DNA methylation age (mAge), and their visual attention for eyes. These factors are also linked to higher scores in the Strengths and Difficulties Questionnaire (SDQ) \u2013 an indicator of accelerated aging and decreased eye contact as a result of childhood maltreatment. PHOTO: Keiko Ochiai<\/sup><\/em><\/figcaption><\/figure>\n\n\n\n

Childhood maltreatment leaves a lasting impact that goes far beyond physical injuries or fading memories. Scientific evidence has long shown that children who experience abuse and neglect face increased risk of chronic diseases, mental health disorders, and premature death throughout their lives.<\/p>\n\n\n\n

Beneath these visible signs lies a deeper truth: childhood maltreatment can fundamentally alter a child\u2019s biology, triggering molecular changes that can last for decades.<\/p>\n\n\n\n

Recent research is unraveling that childhood maltreatment doesn\u2019t just harm development\u2014it appears to speed up the aging process itself. Despite growing awareness of the lasting impact of childhood maltreatment, the research fraternity has struggled to understand precisely how these early experiences trigger such deep changes, particularly in very young children.<\/p>\n\n\n\n

A possible reason is that previous studies have relied heavily on inconsistent biological markers or subjective self-reports and also lacked the tools to simultaneously examine both the biological alterations and social behavioral changes that occur in maltreated children.<\/p>\n\n\n\n

To address these knowledge gaps, a research team from Japan\u2019s United Graduate School of Child Development\u2014a collaboration between Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University, and the University of Fukui\u2014conducted a comprehensive study examining both biological aging and social behavior in young children. <\/p>\n\n\n\n

Their findings,\u00a0published online in the\u00a0PLOS One<\/em>\u00a0journal on May 30, 2025<\/a>, provide unprecedented evidence and insights into how childhood maltreatment simultaneously accelerates biological aging and impairs social development. <\/p>\n\n\n\n

The researchers studied 96 Japanese children aged between 4 and 5 years, comparing 36 children who had experienced severe maltreatment with 60 typically developing peers. They measured biological aging by looking at DNA methylation patterns using a novel method called the Pediatric-Buccal-Epigenetic clock, which the team has pioneered in their earlier works.<\/p>\n\n\n\n

These molecular signatures, captured from genetic material from simple cheek swabs, essentially indicate how fast a child\u2019s body is aging at the cellular level. Additionally, they used eye-tracking technology to monitor the children\u2019s social attention patterns, measuring how long children looked at different elements in carefully selected video footage.<\/p>\n\n\n\n

A comprehensive analysis of the data painted a clear yet concerning picture. The team found that children who had experienced maltreatment exhibited significantly accelerated biological aging compared to their typically developing peers.<\/p>\n\n\n\n

Furthermore, these children spent notably less time looking at eyes when presented with videos of human faces. This reduced attention to eyes\u2014a crucial aspect of social interaction and understanding\u2014suggests there are fundamental differences in how maltreated children process social information. <\/p>\n\n\n\n

Accelerated biological aging and reduced eye contact were both strongly linked to higher scores on measures of emotional and behavioral difficulties, determined using questionnaire-based tools.<\/p>\n\n\n\n

Notably, the researchers found that while accelerated biological aging and reduced eye contact were associated, they appeared to contribute independently to the reported difficulties. This finding highlights that maltreatment may affect children through multiple, distinct biological and social pathways.<\/p>\n\n\n\n

\u201cOur research sends a powerful message: child maltreatment can leave invisible but measurable marks on a child\u2019s biology and social development. By identifying these early warning signs, we can step in earlier and provide targeted support,\u201d emphasized Ms. Ochiai.<\/p>\n\n\n\n

By providing objective measures of the impact of child maltreatment, these findings also underscore an urgent need for early identification and intervention strategies. <\/p>\n\n\n\n

\u201cTools such as eye-tracking assessments and stress-related biological testing could help teachers, doctors, and caregivers expedite the identification of children at risk,\u201d remarks Ms. Ochiai. <\/p>\n\n\n\n

Adding further, she says, \u201cSupport programs can then be tailored to improve social skills, reduce emotional stress, and promote healthier development\u2014potentially preventing more serious problems later in life.\u201d<\/p>\n\n\n\n

Overall, these findings not only deepen our understanding of how child maltreatment shapes development but also offer practical avenues for offering more proactive support. This, in turn, can hopefully assist in providing vulnerable children with the skills and resilience needed for a healthier future.<\/p>\n\n\n\n

The research team included graduate student Keiko Ochiai, Assistant Professor Shota Nishitani, Associate Professor Takashi X. Fujisawa, and Professor Akemi Tomoda, among others.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

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