According to Oliver Fiehn, a metabolomics researcher at the University of California, Davis, people are much more than meets the eye. “We are not just human,” he said. “We are an ecosystem.” The ...

Stool samples can help doctors diagnose some health conditions. Tips for collecting a stool sample include urinating before collecting the sample and using any tools that the sample kit provides.

The National Institute of Standards and Technology (NIST) released a human stool reference material that will help scientists accurately measure the gut microbiome. The initiative aims to speed ...