Uploaded March 2023 | Updated September 2026, 2 weeks ago

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More microorganisms live in and on our bodies than our bodies have cells. Bacteria, fungi and viruses form our microbiome and its condition is crucial to our health. Our “lodgers” are responsible for a large part of our immune defenses, protect our skin and communicate with the brain, but above all, as what are known as “intestinal flora”, they facilitate our metabolism.

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