Chronic Ongoing Stressors and C-Reactive Protein: A Within-Person Study

J Aging Health. 2020 Aug-Sep;32(7-8):892-903. doi: 10.1177/0898264319862419. Epub 2019 Jul 17.

Abstract

Objectives: Literature suggests C-reactive protein (CRP)-as a marker of low-grade systemic inflammation-may mediate the linkage between chronic stressors and cardiometabolic conditions. Previous population-based reports are based on weak methodologies and may have yielded incorrect inferences. The current study examined linkages of within-person CRP variation with corresponding variation in stressor burdens. Method: Data were from the 2006, 2010, and 2014 waves of the U.S. Health and Retirement Study. Analysis was through unit fixed effects and first-difference estimators. Both gender-combined and gender-specific models were run. Results: In none of the analyses was CRP positively associated with chronic stressors. This was true among both genders, and in models of linear as well as nonlinear change. Results held in a series of separate robustness checks. Discussion: CRP may not mediate the social etiology of degenerative diseases. Population representative evidence of inflammation's role in these processes remains absent.

Keywords: HRS; cardiometabolic; inflammation; older adults; stress process.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Biological Variation, Individual*
  • Biomarkers
  • C-Reactive Protein / analysis*
  • Cardiometabolic Risk Factors
  • Female
  • Humans
  • Inflammation / blood*
  • Inflammation / epidemiology
  • Longitudinal Studies
  • Male
  • Middle Aged
  • Stress, Physiological
  • Stress, Psychological / blood
  • Stress, Psychological / epidemiology
  • United States / epidemiology

Substances

  • Biomarkers
  • C-Reactive Protein