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Trillions of bacteria live in our gut
Artur Plaugo/Science Photo Library
Analyzing your own stool was once a niche interest. But a quick look on Amazon reveals a number of home tests designed to test the composition of stool. You can also purchase kits for your pet.
Such products reflect the public’s growing interest in information about the gut microbiome. “Many patients come to their doctors, no matter what country they are in, asking about microbiome testing,” said Gianluca Iannilo of the Roman Catholic University.