Zinc is essential for gut health, contributing to intestinal barrier integrity, immune modulation, and enzymatic digestion. Zinc deficiency is linked to increased intestinal permeability ('leaky gut'), dysbiosis, and mucosal inflammation. Some human studies suggest that zinc supplementation can reduce symptoms in diarrheal diseases and support remission in inflammatory bowel disease, but the evidence is moderate and often confounded by dosage, form (e.g., zinc gluconate vs. picolinate), and individual genetic factors (e.g., SLC30A8 variants). Mechanistic and animal data are strong, but large-scale randomized trials are limited. MyBody-X offers tests that can assess zinc status (e.g., whole blood zinc) and gut health markers (microbiome composition, calprotectin, zonulin). However, indiscriminate supplementation carries risks, such as copper deficiency. The provided context does not include direct studies on zinc and gut health; this answer reflects general scientific consensus. Evidence is graded as human-moderate.
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