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A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents
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Published on: July 10, 2017

Are cortisol profiles a stable trait during child development?

Mark V Flinn1

  • 1Department of Anthropology, University of Missouri, Columbia, Missouri 65211, USA. FlinnM@Missouri.edu

American Journal of Human Biology : the Official Journal of the Human Biology Council
|August 21, 2009
PubMed
Summary
This summary is machine-generated.

Childhood stress does not permanently elevate cortisol. This 20-year study found no evidence that traumatic experiences in youth lead to lasting changes in the hypothalamic-pituitary-adrenal (HPA) system

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Area of Science:

  • Neuroendocrinology
  • Developmental Psychology
  • Public Health

Background:

  • Stressful experiences are linked to negative health outcomes.
  • The hypothalamic-pituitary-adrenal (HPA) system, regulated by cortisol, is a key neuroendocrine pathway mediating stress.
  • Previous research suggests early life trauma may permanently alter HPA regulation and health.

Purpose of the Study:

  • To examine developmental trajectories of HPA functioning in children under naturalistic conditions.
  • To assess the long-term effects of childhood stress on cortisol levels and health.
  • To test the hypothesis that childhood trauma causes permanent elevation of cortisol.

Main Methods:

  • A 20-year longitudinal study (1988-2009) of children in Dominica.
  • Collected >100 saliva samples per child to measure cortisol levels.
  • Monitored growth, morbidity, and social environment, analyzing data from 147 children aged 3-16 years.

Main Results:

  • Cortisol levels were standardized by time since wake-up.
  • Results did not support the hypothesis of permanently elevated cortisol due to childhood traumatic stress.
  • Longitudinal data revealed complex developmental trajectories of HPA functioning.

Conclusions:

  • Childhood traumatic stress does not appear to cause a permanent general elevation of cortisol levels.
  • The relationship between early life stress, HPA axis regulation, and long-term health requires further investigation.
  • Naturalistic, longitudinal studies are crucial for understanding developmental impacts of stress.