This narrative review explores the Liver-Gut-Immune-Oral Axis, a conceptual framework connecting chronic liver disease and periodontitis. The authors discuss how these conditions might be linked through a cycle of inflammation. However, the review notes that this integrated biological system has not yet been directly validated by experimental studies.
The forward and reverse pathways described are currently inferred from mechanistic and associative studies rather than proven causal links. This means the connection remains a theoretical model based on existing evidence. The review highlights that targeting this axis with metabolic modulators or periodontal interventions could offer strategies for precision medicine.
Readers should understand that while this framework is interesting, it awaits direct experimental validation. The validity of this axis as a causally-linked system is not yet confirmed. Until more direct evidence is available, these connections should be viewed as a hypothesis rather than a proven fact.