Why is my poop brown?
- Written by Hannibal Person, Assistant Professor of Gastroenterology and Hepatology, School of Medicine, University of Washington


Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.
Why is my poop brown? – Ethan J., age 9, Potomac, Maryland
Three-quarters of your poop consists of water and...