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Dan Baumgardt, Senior Lecturer, School of Physiology, Pharmacology and Neuroscience, University of Bristol

You are what you poo: how to read your stools

Leonid Sorokin/Shutterstock

One of my hometown’s claims-to-fame, aside from the magnificence of the Clifton Suspension Bridge, is being the birthplace of the mighty Bristol Stool Chart.

This seven category scale, developed at Bristol Royal Infirmary, categorises poo across a spectrum – from hard pellets like rabbit droppings to brown water. According to the chart, the ideal stool is a mid-range type 4: “like a sausage, smooth and soft”.

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