Stress induces endotoxemia and low-grade inflammation by increasing barrier permeability.
Level 5 - mechanism / opinion, no new human data
Narrative review and conceptual hypothesis paper without systematic search or original data.
PubMed 26029209 · doi:10.3389/fimmu.2015.00223
What was done
This is a narrative review and hypothesis paper. The authors synthesize existing literature to propose a mechanistic framework in which homeostatic stress responses alter intestinal barrier permeability, leading to bacterial translocation and chronic low-grade inflammation.
What was found
No quantitative findings, sample sizes, effect sizes, or statistical results are reported in the abstract. The authors hypothesize that stress-driven increases in gut permeability—initially an adaptive response to meet metabolic demands—permit bacterial toxins into the bloodstream, driving low-grade inflammation linked to non-communicable diseases.
Why it matters
The paper outlines a unifying physiological mechanism linking environmental stressors and lifestyle factors to systemic inflammation via gut barrier dysfunction. This conceptual model serves as a framework for designing future empirical trials.
Limits
The abstract provides no empirical data, statistical tests, or systematic review methodology. It relies on theoretical synthesis and observational associations cited from other literature, meaning causal relationships cannot be confirmed from this work alone.
Cited by
- partial A 2015 paper in Frontiers in Immunology concluded that endotoxemia is the primary cause of morbidity and mortality worldwide.