03/11/2026
Zonulin came back normal. But your gut still isn't right.
That's more common than you'd think.
Zonulin is the most widely used marker of leaky gut and fluctuates with stress, gluten, and immune activity. One result doesn't tell you much. And plenty of people with real gut barrier issues never see an elevated number.
Because leaky gut isn't just a tight junction problem.
It's a microbial ecosystem problem.
Strain-level bacterial identification reveals what Zonulin misses:
→ Low butyrate-producing bacteria
→ Histamine-producing strains
→ LPS-driven immune activation
→ Post-antibiotic collapse of keystone species
That's the difference between chasing a number and fixing the root cause.
Full breakdown on the blog with the link in bio. 🔗 https://www.gutid.com/blogs/news/strain-level-bacterial-identification-leaky-gut-intestinal-permeability
