Annals of Behavioral Medicine

, Volume 41, Issue 1, pp 13–20 | Cite as

Education and Levels of Salivary Cortisol Over the Day in US Adults

  • Jennifer B. Dowd
  • Nalini Ranjit
  • D. Phuong Do
  • Elizabeth A. Young
  • James S. House
  • George A. Kaplan
Original Article

Abstract

Background

Dysregulation of the hypothalamic–pituitary–adrenal axis is hypothesized to be an important pathway linking socioeconomic position and chronic disease.

Purpose

This paper tests the association between education and the diurnal rhythm of salivary cortisol.

Methods

Up to eight measures of cortisol (mean of 5.38 per respondent) over 2 days were obtained from 311 respondents, aged 18–70, drawn from the 2001–2002 Chicago Community Adult Health Study. Multi-level models with linear splines were used to estimate waking level, rates of cortisol decline, and area-under-the-curve over the day, by categories of education.

Results

Lower education (0–11 years) was associated with lower waking levels of cortisol, but not the rate of decline of cortisol, resulting in a higher area-under-the-curve for more educated respondents throughout the day.

Conclusions

This study found evidence of lower cortisol exposure among individuals with less education and thus does not support the hypothesis that less education is associated with chronic over-exposure to cortisol.

Keywords

Socioeconomic factors Cortisol Education 

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Copyright information

© The Society of Behavioral Medicine 2010

Authors and Affiliations

  • Jennifer B. Dowd
    • 1
    • 2
  • Nalini Ranjit
    • 3
    • 4
  • D. Phuong Do
    • 5
  • Elizabeth A. Young
    • 6
  • James S. House
    • 7
  • George A. Kaplan
    • 8
    • 9
  1. 1.School of Public Health, Hunter CollegeCity University of New York (CUNY)New YorkUSA
  2. 2.CUNY Institute for Demographic Research (CIDR)New YorkUSA
  3. 3.School of Public HealthUniversity of TexasAustinUSA
  4. 4.Michael and Susan Dell Center for Advancement of Healthy LivingAustinUSA
  5. 5.Department of Health Services Policy and Management, Arnold School of Public HealthUniversity of South CarolinaColumbiaUSA
  6. 6.Department of PsychiatryUniversity of MichiganAnn ArborUSA
  7. 7.Institute for Social ResearchUniversity of MichiganAnn ArborUSA
  8. 8.Center for Social Epidemiology and Population HealthSchool of Public Health-University of MichiganAnn ArborUSA
  9. 9.Department of Epidemiology, School of Public HealthUniversity of MichiganAnn ArborUSA

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