What Should Poop Look Like?

The fascinating diversity of poop shapes, sizes, smells and colors and what they say about your health

Robert Roy Britt
Aha! Science
Published in
4 min readJun 20, 2022

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Even when everything comes out OK, poop exhibits an engrossing variety of shapes, sizes, textures, aromas and colors. I mean, you don’t even want to know what’s in there. Dead bacteria. Expired red blood cells. Mucus and bile. Undigested corn. You name it.

But your business, along with its frequency, can hint at health issues, too, some that have easy fixes and others that are more serious. Here’s some no-nonsense toilet reading to take with on your next BM.

Shape and texture

While your excretions may never look exactly like any of these examples, the Bristol Stool Chart is commonly employed to sort through scatological morphology:

The Bristol Stool Chart. Credit: Cabot Health via Wikipedia. CC BY-SA 3.0

If you consistently produce hard lumps or those distasteful lumpy sausages (types 1 and 2) or if you find it painful to go, you might alleviate your constipation with more water or more fiber (fruits, vegetables and whole grains), says Christine Lee, MD, a gastroenterologist at the Cleveland Clinic. Other causes can include certain medications or lack of physical activity.

Mushy or runny poo (types 6 or 7) could signal a short-term digestive issue or even mental…

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Robert Roy Britt
Aha! Science

Editor of Aha! and Wise & Well on Medium + the Writer's Guide at writersguide.substack.com. Author of Make Sleep Your Superpower: amazon.com/dp/B0BJBYFQCB