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Evidence-informed articles on nutrition, metabolism, hormones, digestive health, fitness, recovery, lab testing, and functional medicine.

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Gut Health and the Immune System: How They Connect

Gut Health and the Immune System: How They Connect

Gut Health and the Immune System: How They ConnectKerri Rachelle
Published on: 05/08/2026

Learn how the intestinal barrier, microbiome, GALT and secretory IgA interact with immunity—and why not every immune condition begins in the gut.

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What Is the Gut Microbiome? Functions, Testing and Health

What Is the Gut Microbiome? Functions, Testing and Health

What Is the Gut Microbiome? Functions, Testing and HealthKerri Rachelle
Published on: 04/08/2026

Learn what the gut microbiome is, what gut microbes do, what dysbiosis means and what microbiome testing can—and cannot—tell you about your health.

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