Mechanistic · Editorial synthesis
Physiological and dysregulated intestinal permeability
Mechanistic · Editorial synthesis
Research
Permeability
The regulated movement of molecules across the intestinal barrier.
Research library
Research articles
Human observational · Editorial synthesis
Measuring intestinal permeability: methods, markers and interpretation
Human observational · Methods · Measurement · Interpretation
Mechanistic · Human observational · Systematic review · Meta-analysis · Editorial synthesis
Zonulin as pathway, biomarker and measurement
Mechanistic · Human observational · Systematic review · Meta-analysis · Editorial synthesis
Human observational · Systematic review · Meta-analysis
Evidence for altered intestinal permeability in human research
Human evidence · Association · Causality · Interpretation
Related ideas
Perspective · Regulation · Aug 25, 2026
Permeability is not the problem. Dysregulation is.
Health lies less in maintaining a fixed state than in a system’s capacity to regulate, adapt and recover. Intestinal permeability provides a biological starting point for asking when a response is appropriate—and when regulation becomes dysregulation.
Evidence interpretation · Zonulin · Aug 25, 2026
Zonulin: pathway, marker and measurement are not the same.
Zonulin provides a concrete example of a wider scientific problem: turning a dynamic regulatory mechanism into a simple linear disease model. Each step from pathway to measurement, permeability and pathology requires its own evidence.