IDEAS
Birna Ásbjörnsdóttir’s perspectives, interpretations and syntheses arising from the questions explored through BIRNA Research.
For evidence explainers and research foundations, explore Research →
Perspective · Regulation · Aug 25, 2026
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 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.
Perspective · Living Boundaries · Aug 24, 2026
Living Boundaries concerns the health of communication: how a boundary receives, sets limits and adapts according to context. The intestinal barrier is the biological starting point for that larger question.