Many doctors use the Bristol stool chart to help evaluate the health of bowel movements. The chart is a form scale, meaning that it rates stool based on factors like size and consistency.

Sean Gibbons, a microbiologist at the Institute for Systems Biology, joins The Excerpt to discuss what bowel movements reveal ...

It puts pressure on your colon walls and stimulates movement. So this is what ... let us introduce you to the Bristol stool scale, a handy-dandy chart listing the different types of poop your ...

The Bristol stool scale is a chart that can help classify stools into groups to identify a healthy bowel movement. Hard, pebble-like stool is a sign of constipation, which can happen for many reasons.