Myths vs facts: Leaky Gut Test and blood sugar

The idea that a 'leaky gut' test (e.g., zonulin, LPS antibodies) directly predicts blood sugar spikes is not supported by strong evidence. While increased intestinal permeability may contribute to systemic inflammation and insulin resistance, most data come from animal models or small human studies. Consumer leaky gut tests measure surrogate markers that lack standardization and clinical validation for glucose management. The MyBody-X context does not address leaky gut tests; it notes that DNA or microbiome tests cannot replace real-world glucose monitoring (e.g., CGM). A positive leaky gut result alone does not justify eliminating specific foods. For blood sugar control, evidence-based approaches like CGM, HbA1c, and dietary tracking are more reliable. Marketing often overstates the link between gut barrier function and glucose. Fact: No validated at-home test can accurately guide individual carb timing or insulin sensitivity. Caveat: If you suspect a gut issue, consult a gastroenterologist rather than relying on direct-to-consumer kits.