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Updated: Oct 13, 2025
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Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
Published on: January 28, 2014
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Deconstructing sex differences in C-reactive protein trends over time.
Ashley W Kranjac1, Dinko Kranjac2, Olivia Lounsbury3
1Department of Sociology, Wilkinson College, Chapman University, Orange, California, USA.
Summary
Serum C-reactive protein (CRP) levels show differing trends between sexes. While men experienced a CRP increase due to lifestyle factors, women saw a decrease, indicating distinct population health shifts.
Area of Science:
- Biochemistry and Molecular Biology
- Epidemiology
- Public Health
Background:
- Heightened inflammatory states, indicated by C-reactive protein (CRP) levels, are linked to increased inflammation-mediated disease risk.
- Understanding temporal trends in serum CRP requires accounting for population fluctuations and sex-specific variations.
Purpose of the Study:
- To identify the drivers of changing trends in population serum CRP distributions.
- To analyze these trends separately for men and women using decomposition models.
Main Methods:
- Utilized data from the National Health and Nutrition Examination Survey.
- Employed linear and algebraic decomposition models, stratified by sex.
- Analyzed changes in CRP levels over a 10-year period.
Main Results:
- Observed a nonsignificant overall increase in CRP, with a significant decrease in women and a significant increase in men.
- Identified worsening lifestyle/health characteristics and shifts in socioeconomic/demographic group sizes as drivers for increased CRP in men.
- Attributed the decrease in CRP among women to lower CRP levels in the typical woman across cohorts.
Conclusions:
- Two distinct processes underlie the observed changes in CRP values: a decline in women and a rise in men.
- These findings highlight sex-specific dynamics in population inflammatory markers.
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