Abstract:
BACKGROUND:Chronic stress may facilitate the development of metabolic diseases. Insulin resistance is present long before the clinical manifestations of individual metabolic abnormalities. To explore whether chronic stress is an independent risk factor of insulin resistance, we investigated the relationship between the stress system, selected parameters of energy homeostasis, and insulin resistance in a Chinese population. METHODS:We recruited 766 workers employed at four companies in Beijing. The degree of insulin resistance was determined using the homeostasis model assessment of insulin resistance (HOMA-IR). The highest quartile of HOMA-IR among all study subjects was further defined as insulin resistance in our study. The short standard version of the Copenhagen Psychosocial Questionnaire (COPSOQ) was used to assess job-related psychosocial stress. Pearson's correlation coefficients were calculated between cortisol level and HOMA-IR and components of metabolic syndrome, with stratification by gender. The relationship between cortisol and HOMA-IR independent of obesity was analyzed using a linear mixed model with company as a cluster unit. RESULTS:The values of the two scales of COPSOQ, including "demands at work" and "insecurity at work", were significantly associated with insulin resistance and cortisol concentration (P < 0.05). Cortisol was significantly positively correlated with glucose, HOMA-IR, and waist circumference in males and females (P < 0.05). After adjusting for potential confounders, cortisol was an independent positive predictor for HOMA-IR (P < 0.05). CONCLUSIONS:These findings showed that chronic stress was associated with insulin resistance and may contribute to the development of insulin resistance.
journal_name
J Epidemioljournal_title
Journal of epidemiologyauthors
Yan YX,Xiao HB,Wang SS,Zhao J,He Y,Wang W,Dong Jdoi
10.2188/jea.JE20150183subject
Has Abstractpub_date
2016-07-05 00:00:00pages
355-60issue
7eissn
0917-5040issn
1349-9092journal_volume
26pub_type
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