This week we revealed that Bolton is leading the way into poo research.
And jokes aside the research being conducted locally could revolutionise treatment for a number of conditions over the next 20 years.
So that prompted us to look at what your poo says about you.
The Bristol Stool Chart (pictured) is a way to talk about shapes and types of poo. It's also known as the Meyers Scale.
The chart is designed to help doctors measure the time it takes for food to pass through your body and leave as waste.
The shape and form of your stools may also point your doctor toward a diagnosis of some digestive problems.
The ideal stool is generally type 3 or 4. If yours is type 1 or 2, you're probably constipated. Types 5, 6, and 7 tend toward diarrhea.
Ken Heaton, MD, from the University of Bristol, developed the chart in 1997.
What does yours say about you?
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