Journal
STRESS-THE INTERNATIONAL JOURNAL ON THE BIOLOGY OF STRESS
Volume 24, Issue 6, Pages 763-771Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10253890.2021.1919615
Keywords
Shift work; salivary cortisol; perceived stress scale; dietary pattern; women; workers
Funding
- National Council of Technological and Scientific Development [CNPq] [477069/2009-6, 478366/2011-6, 307257/2013-4, 307175/2017-0]
- Fundacao de Amparo a Pesquisa do Rio Grande do Sul (FAPERGS) [FAPERGS/INCT 17/2551-0000519-8]
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This study found an association between perceived stress and salivary cortisol levels with the snack and fast-food dietary pattern among women shift workers, with higher stress levels associated with a greater probability of consuming snacks/fast food and waking cortisol levels inversely associated with the dietary pattern. Work shift was not associated with perceived stress or cortisol levels in this study.
This study aimed to investigate the association of perceived stress and salivary cortisol levels with the snack and fast-food dietary pattern in a sample of women shift workers. We conducted a cross-sectional study of 539 women aged 18-53 years working in the production line of a poultry processing plant. Stress was assessed with the 10-item Perceived Stress Scale (PSS-10) and by salivary cortisol levels (immediately after waking and upon returning home from work). Dietary patterns were identified by principal component analysis. We used linear and Poisson regression models to assess multivariable-adjusted associations of perceived stress and salivary cortisol levels with the snack and fast-food dietary pattern. After adjustments, women with higher PSS-10 scores had a 28% higher probability (95% confidence interval, 1.04-1.56) of consuming snacks/fast food. Mean (SD) waking cortisol levels were inversely associated with quartiles of the dietary pattern: Q1, 6.63 (0.43) nmol/L; Q2, 6.00 (0.38) nmol/L; Q3, 5.62 (0.40) nmol/L; and Q4, 5.29 (0.35) nmol/L (p = 0.019). Perceived stress was not associated with salivary cortisol levels. The work shift was not associated with perceived stress or cortisol levels. This study demonstrated an association of psychological and physiological measures of stress with a dietary pattern characterized by high intakes of hyper-palatable, energy-dense, ready-to-eat foods among women shift workers.
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