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  • Title: Hair cortisol in relation to job stress and depressive symptoms.
    Author: Janssens H, Clays E, Fiers T, Verstraete AG, de Bacquer D, Braeckman L.
    Journal: Occup Med (Lond); 2017 Mar 01; 67(2):114-120. PubMed ID: 27515972.
    Abstract:
    BACKGROUND: Measurement of hair cortisol concentration (HCC) may be used as a biomarker for chronic stress. However, the association between stress and HCC has rarely been investigated in a working population. AIMS: To explore associations between (i) HCC and various stress measures and (ii) HCC and symptoms of depression in Belgian workers. METHODS: Hair samples were collected from workers in two production companies and cortisol content was determined by liquid chromatography tandem mass spectrometry. Participants completed a questionnaire including socio-demographics, health behaviours and standardized measures for assessing stress. RESULTS: After excluding those workers suffering from a psychiatric or neuroendocrine disease and those treated with glucocorticoids, there were a total of 102 workers with both questionnaire, cortisol results and anthropometric measures. Median HCC was 5.73 pg/mg hair (interquartile range = 4.52-9.06). No significant associations were found between cortisol and the standardized measures related to several work psychosocial risk factors. A significantly lower mean HCC was found in shift workers compared with dayworkers, adjusted for age. Additionally, a significant higher mean HCC was found in workers with symptoms of depression compared with those without symptoms of depression, after adjustment for age. CONCLUSIONS: HCC showed a limited applicability as a biomarker for job stress in this sample, although the results suggest this method may be a suitable marker for detecting early symptoms of depression. Further research is needed to investigate the applicability of HCC in the working environment and within job stress research.
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