Evidence check: Leaky Gut Test in the context of fertility

The scientific evidence for a 'leaky gut' test in the context of fertility is weak and not supported by clinical guidelines. The concept of increased intestinal permeability is often marketed via zonulin measurements in stool or blood, but robust studies linking it causally to fertility issues are lacking. Zonulin assays are methodologically controversial, and reference ranges are not standardized. While some research suggests that a disrupted gut barrier may contribute to systemic inflammation, direct recommendations for fertility diagnostics do not exist. MyBody-X does not offer a specific leaky gut test; its available tests (e.g., IgG panels, microbiome) are not validated for this purpose. Those planning pregnancy and concerned about gut health should rely on evidence-based approaches such as a physician-supervised elimination diet or specific IgE testing. Antioxidant supplements (e.g., vitamin E, beta-carotene) have shown no benefit or even harm in RCTs and should not be taken uncritically. Conclusion: Leaky gut tests lack evidence for fertility; a comprehensive, medically guided evaluation is recommended.