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“Leaky Gut” and Zonulin: What It Is, Why the Tests Are Controversial, and How to Read Results Without Overreacting

“Leaky What?” The term “leaky gut” is popular in health discussions. Some believe it causes many chronic health issues, while others view it as vague and unproven. Central to this debate is a protein called zonulin. Labs offer tests for intestinal permeability, but they can be misleading. This guide explains what...

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