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  • Title: The cortisol/DHEA ratio mediates the association between early life stress and externalizing problems in adolescent boys.
    Author: Lee Y, Donahue GZ, Buthmann JL, Uy JP, Gotlib IH.
    Journal: Psychoneuroendocrinology; 2024 Jul; 165():107034. PubMed ID: 38554595.
    Abstract:
    BACKGROUND: Despite evidence that early life stress (ELS) can influence the functioning of the hypothalamic-pituitary-adrenal (HPA) axis and increase maladaptive behaviors in adolescence, less attention has been paid to the role of the coordinated effects of the two primary adrenal hormones, cortisol and dehydroepiandrosterone (DHEA), in these associations. METHODS: 138 typically developing adolescents (76 females) reported the stressful events experienced during childhood and early adolescence across 30 domains. Two years later we assessed levels of externalizing problems and obtained salivary levels of cortisol and DHEA. Using causal moderated mediation analyses, we examined whether the ratio of cortisol to DHEA (CD ratio) mediates the association between ELS and subsequent externalizing problems. RESULTS: We found that ELS is associated with both a lower CD ratio and more externalizing problems. Importantly, a lower CD ratio mediated the association between ELS and externalizing problems in boys. CONCLUSIONS: An imbalance in adrenal hormones may be a mechanism through which ELS leads to an increase in externalizing problems in adolescent boys. These findings underscore the utility of using the CD ratio to index HPA-axis functioning.
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