The World Inside

The gut microbiome may allow a peek into health and suggest ways to keep people healthy.

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The intestinal flora changes

The intestinal flora changes drastically in different sections.

So a stool fecal sample would not tell what bacteria populations are in the small intestine, which is critical for absorbing nutrients.

A fecal sample would tell what was present in the large intestine, where water is absorbed.

Overgrowth, such as c. difficile infections occur in the small intestine. Many complex interactions occur.

Some projects have sequenced DNA from bacteria to find common bacteria in large populations, and those that are affected by antibiotics and might need to be repoopulated [sic].