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Articles on Digestive system

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Brown poop can indicate good health. Vitalii Barida/iStock via Getty Images Plus

Why is my poop brown?

The answer is more complicated than you might think. It has to do with how your body gets rid of old red blood cells.
Your tummy is a juicy rollercoaster ride for food! Flickr/Stuart Richards

Curious Kids: how does my tummy turn food into poo?

Your stomach works very hard with some other body parts to break down food into small pieces. Your body takes in what it needs and the rest is turned into poo.
Defecation duration is surprisingly similar throughout the mammal world. Elephant image via www.shutterstock.com.

Physics of poo: Why it takes you and an elephant the same amount of time

New parenthood got our fluid dynamics experts thinking about what ends up in the diaper. They headed to the zoo and the lab to come up with a cohesive physics story for how defecation works.

Microbes responsible for fat absorption

Researchers have conducted the first study to conclusively demonstrate that microbes can promote the absorption of dietary…

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