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Gut Microbiota as a Mediator of Essential and Toxic Effects of Zinc in the Intestines and Other Tissues

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This review illustrates zinc’s dose- and species-dependent impact on gut microbiota, linking both deficiency and excess to dysbiosis and systemic inflammation. Physiological Zn enhances barrier integrity and probiotic efficiency, while excess Zn favors pathogens. Zn–microbiota interactions extend beyond the gut, influencing neurodevelopmental and metabolic diseases.

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