Selenium, gut microbiota, and systemic health: narrative review of the Se-gut-tissue axis
A narrative review proposes that dietary selenium modulates gut microbiota composition and, through this pathway, may influence distal organ homeostasis.
| Population | — |
|---|---|
| Intervention | — |
| Comparator | — |
| Outcome | — |
What the study showed
The abstract describes associations between organic or synthetic selenium forms and enrichment of genera such as Akkermansia, Lactobacillus, and butyrate-producing Clostridia, with concurrent suppression of opportunistic pathogens. These microbial shifts are linked to improved intestinal barrier integrity, antioxidant responses (GPX, TrxR), anti-inflammatory signaling (NF-κB suppression), and production of SCFAs and secondary bile acids. The review extends these associations to liver, brain, muscle, kidney, and reproductive organs.
How it was done
This is a narrative review synthesizing existing literature on selenium, gut microbiota, and tissue health. No primary data collection or systematic protocol is described in the abstract.
Risk of bias
Narrative reviews are prone to selection bias and do not support causal inference. The abstract provides no information on study inclusion criteria, heterogeneity of primary sources, or quality assessment of compiled data.
What this study does NOT prove
The review does not prove causality between selenium, gut microbiota, and distal organ health in humans.
In clinical practice
This abstract provides insufficient basis to recommend selenium supplementation targeting microbiota-mediated effects in clinical practice. Described associations require validation through controlled clinical trials.
Limitations
Narrative reviews are prone to selection bias and do not support causal inference. The abstract provides no information on study inclusion criteria, heterogeneity of primary sources, or quality assessment of compiled data.
Technical appendix
Version history
- 1.0 · 2026-07-28 — Auto-generated under Evidence Standard v1.0
Paid access: structured summary from public metadata; consult the original study at the source.