Irene came in for migraines.
Thirty-six years old. Elementary school teacher. Already diagnosed with irritable bowel syndrome. Already scoped twice, endoscopy and colonoscopy both showing diffuse inflammation, gastritis, GERD. Already told she couldn’t tolerate GLP-1 medications because of her IBS. She had done her research online and found me.
She seemed, on the surface, like a patient with a well-documented GI history and a headache problem. I almost missed what was actually going on.
She mentioned she wanted to lose six pounds. I looked at her. She was in good shape. Six pounds was not a medical problem. I asked why. She said she wanted to stay young and pretty as she got older.
I asked what her weight had been two years ago. She said she had been about ten pounds lighter. They had just gotten married around that time. She smiled when she said it: He was crazy about me.
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Is he not crazy about you now?
I made it light. She half-laughed. Then she said, yeah, it’s just. And she stopped.
I asked about sleep. It had never been great but had gotten significantly worse over the last year. I asked what changed. She said nothing. Her husband worked construction, came home late, slept like a baby. Someone in the house was getting good sleep. She didn’t laugh that time.
The picture was assembling itself. Poor sleep for over a year. Ten pounds of weight gain. IBS worsening. Migraines. Irregular periods for the past few months, she was worried about early menopause, and they hadn’t had children yet. A marriage that had quietly shifted into something she didn’t have words for yet.
She wasn’t imagining any of it. Her body was doing exactly what a body does when it is living inside a chronic stress load it cannot name and cannot escape.
The tests confirmed what the story had already told me
Cortisol was persistently elevated across the diurnal curve, not a single high morning reading but a pattern of dysregulation. Her HPA axis was running hot.
Her gut permeability panel showed serum zonulin elevated above reference range. Zonulin is the primary endogenous regulator of tight junction permeability, the protein that controls how open or closed the single-cell epithelial barrier remains. LPS antibodies, IgG and IgA fractions, were positive, confirming active endotoxin translocation across the barrier into systemic circulation. Secretory IgA was depleted. Fecal calprotectin confirmed active intestinal inflammation. A GI-MAP identified dysbiotic gram-negative bacterial overgrowth, the primary LPS source.
The GI physician had scoped her and found inflammation. That was accurate. What the scope cannot show is why the barrier is failing. It cannot measure zonulin. It cannot quantify LPS translocation. It cannot tell you that chronic cortisol elevation directly downregulates tight junction protein expression, that the barrier was being chemically dismantled by eighteen months of sustained HPA axis activation.
A complete permeability panel in a case like this includes serum zonulin, LPS antibodies (IgG, IgM, IgA), secretory IgA, fecal calprotectin, and a comprehensive stool analysis. These tests are available. They have reference ranges. They change what you treat and in what order.
Test, don’t guess.
The root cause was not leaky gut
Leaky gut was where we found the damage. The root cause was a 36-year-old woman trying to hold a marriage together in silence, wanting a child, teaching other people’s children every day while watching ten pounds on a scale represent something her husband used to notice that she was afraid he no longer did. The cortisol was not a lab abnormality. It was the biochemical signature of a life being carried alone. The barrier failure, the dysbiosis, the irregular cycles, these were downstream. They were faithful. The body doesn’t malfunction. It escalates.
The repair protocol was sequenced, not scattered
You cannot repair a barrier that is being continuously degraded by its own stress hormones. First: cortisol. Circadian rhythm anchoring, HPA axis support, creating space for what was actually happening in her life. Her irregular cycles were not a separate problem, because chronic cortisol elevation suppresses pulsatile LH release, disrupting the HPG axis downstream. The gut problem and the cycle problem and the sleep problem were one problem in three departments.
Second: barrier substrate. Zinc carnosine for tight junction integrity, specifically studied in NSAID-induced mucosal injury with dual mechanisms through tight junction protein synthesis and direct mucosal protection. L-glutamine for enterocyte fuel. Saccharomyces boulardii CNCM I-745 for sIgA restoration and gram-negative dysbiosis. Sodium butyrate for colonocyte health and tight junction gene expression. DGL for the gastric mucosal layer given her GERD and gastritis. Third: the microbial environment, targeted herbal antimicrobials guided by GI-MAP sensitivities, followed by structured reseeding and fiber diversity to support butyrate-producing commensals.
To the physician reading this: Irene’s root cause was not leaky gut. Leaky gut was where we found the damage. The root cause was a 36-year-old woman trying to hold a marriage together in silence, wanting a child, not sleeping, watching ten pounds represent something her husband used to see that she was afraid he no longer did. The cortisol was not a lab abnormality. It was the biochemical signature of a life being carried alone. The barrier failure, the dysbiosis, the irregular cycles were downstream. They were faithful. The body doesn’t malfunction. It escalates. If you have patients like Irene, scoped, diagnosed, medicated, still symptomatic, the upstream layer is worth mapping. Zonulin, LPS antibodies, diurnal cortisol, sIgA. These are not esoteric tests. They have reference ranges. They change the clinical picture. To the patient reading this: If your tests are back and the treatments aren’t working, ask the harder question. Not what is wrong with your gut. Ask what your gut is responding to. The answer is almost never in the colon. It is almost always upstream, in the life the body has been asked to carry. You are not imagining it. You are not broken. The map your physician has may simply be missing a layer. Ask for the layer.
Three months later
Irene’s migraines had decreased significantly. Her periods had regularized. She had lost the six pounds, not because we targeted the weight, but because we addressed the cortisol-driven visceral adiposity upstream. Sleep was better. Zonulin had come down. sIgA had recovered. She came in and said something I have heard many times: I didn’t realize how bad I felt until I started feeling better.
Good labs. Bad life. There’s a reason.
You cannot heal what you don’t measure. But you also cannot measure your way to the right question without first listening to what the patient is actually saying. Irene told me everything in the first ten minutes. I just had to stop charting long enough to hear it.
This article is discussed on The Podcast by KevinMD: Your leaky gut tests aren’t fixing you.
Shiv K. Goel is a board-certified internal medicine and functional medicine physician based in San Antonio, Texas, focused on integrative and root-cause approaches to health and longevity. He is the founder of Prime Vitality, a holistic wellness clinic, and TimeVitality.ai, an AI-driven platform for advanced health analysis. His clinical and educational work is also shared at drshivgoel.com.
Dr. Goel completed his internal medicine residency at Mount Sinai School of Medicine in New York and previously served as an assistant professor at Texas Tech University Health Science Center and as medical director at Methodist Specialty and Transplant Hospital and Metropolitan Methodist Hospital in San Antonio. He has served as a principal investigator at Mount Sinai Queens Hospital Medical Center and at V.M.M.C. and Safdarjung Hospital in New Delhi, with publications in the Canadian Journal of Cardiology and presentations at the American Thoracic Society International Conference.
He regularly publishes thought leadership on LinkedIn, Medium, and Substack, and hosts the Vitality Matrix with Dr. Goel channel on YouTube. He is currently writing Healing the Split Reconnecting Body Mind and Spirit in Modern Medicine.
