Cortisol awakening response over the course of humanitarian aid deployment: a prospective cohort study

Y. Qing, M. van Zuiden, C. Eriksson, B. Lopes-Cardozo, W. Simon, A. Ager, L. Snider, M.L. Sabin, W Scholte, R. Kaiser, B. Rijnen, M. Olff*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Background: Internationally deployed humanitarian aid (HA) workers are routinely confronted with potentially traumatic stressors. However, it remains unknown whether HA deployment and related traumatic stress are associated with long-term changes in hypothalamic-pituitary-adrenal (HPA) axis function. Therefore, we investigated whether cortisol awakening response (CAR) decreased upon deployment and whether this was moderated by previous and recent trauma exposure and parallel changes in symptom severity and perceived social support.

Methods: In this prospective study, n = 86 HA workers (68% females) completed questionnaires regarding trauma exposure, posttraumatic stress disorder (PTSD), anxiety and depressive symptoms and perceived social support, as well as salivary cortisol assessments at awakening and 30 minutes post-awakening at before, early and 3–6 months post-deployment.

Results: Linear mixed models showed significantly decreased CAR (b(SE) = −.036(.011), p = .002) and awakening cortisol over time (b(SE) = −.007(.003), p = .014). The extent of awakening cortisol change was significantly moderated by interactions between previous and recent trauma exposure. Also, a steeper awakening cortisol decrease was significantly associated with higher mean anxiety and PTSD symptoms across assessments. No significant effects were found for social support.

Conclusions: We observed attenuated CAR and awakening cortisol upon HA deployment, with a dose-response effect between trauma exposure before and during the recent deployment on awakening cortisol. Awakening cortisol change was associated with PTSD and anxiety symptom levels across assessments. Our findings support the need for organizational awareness that work-related exposures may have long-lasting biological effects. Further research assessing symptoms and biological measures in parallel is needed to translate current findings into guidelines on the individual level.
Original languageEnglish
Article number1816649
JournalEuropean Journal of Psychotraumatology
Volume11
Issue number1
DOIs
Publication statusPublished - Dec 2020
Externally publishedYes

Fingerprint

Dive into the research topics of 'Cortisol awakening response over the course of humanitarian aid deployment: a prospective cohort study'. Together they form a unique fingerprint.

Cite this