Teen Conflict and the Body’s Clock
Parent and peer relationship patterns across adolescence are examined alongside biomarkers of aging.
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By
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Kathryn Wighton
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March 17, 2026
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Objective:
To investigate the relationship between interpersonal aggression in early adolescence and biological aging by age 30.
Key Findings:
- Higher self-reported aggression between ages 13 and 15 was linked to faster biological aging at age 30.
- Conflicts with fathers predicted accelerated biological aging, while conflicts with mothers did not.
- Punitive behavior towards friends in early adulthood also predicted accelerated aging.
Interpretation:
Adolescent interpersonal aggression may signal long-term health risks, with relationship dynamics influencing biological aging.
Limitations:
- Observational design limits causal conclusions.
- Biological aging measures are relatively new and composite.
Conclusion:
Relationship difficulties in adolescence are markers of potential long-term health risks.
