The Ultimate Guide to Stool Color: What Your Poo Is Telling You

TL;DR: Your stool color is a key indicator of your digestive health. While brown is the norm, other colors like green, yellow, black, red, or white can be caused by diet, medications, or underlying health conditions. This guide explains each color and when to see a doctor.

Overview: Why Your Stool Color Matters

Welcome to the most comprehensive guide to stool color on the internet. It might seem like a strange topic, but the color of your poo is one of the most direct ways your body communicates the state of your digestive health. From the food you eat to the health of your liver, the shade in the toilet bowl provides valuable clues.

This guide serves as your central hub for understanding every hue. We’ll cover the common colors, what they mean, and link out to our more detailed articles for a deeper dive.

The Poo Colour Decoder

What colour is your poo today? Click a square to find out what it might mean.

Select a colour to begin.

Stool Color Reference Chart

Color Common Meaning Learn More
Brown Healthy and normal. Indicates a well-functioning digestive system. Details →
Green Often caused by leafy greens or rapid digestion. Usually harmless. Details →
Yellow Can indicate excess fat, often due to diet or malabsorption issues. Details →
Black Caused by iron supplements or certain foods, but can also signal upper GI bleeding. See a doctor. Details →
Red May be from red foods (like beets) or could be blood from the lower GI tract. Requires attention. Details →
Pale / White Indicates a lack of bile, which could mean liver or gallbladder issues. See a doctor. Details →

The Stool Color Chart: A Visual Guide

Brown: The Gold Standard

Most of the time, stool is brown. This is due to the presence of bile, a fluid produced by your liver to digest fats. As bile travels through your digestive system, it changes from green to brown. A consistent brown color is a good sign of a healthy digestive tract.

For more details, see our article: Is Brown the Only Normal Color of Poo?

Green: The Speedy Stool

Green stool is one of the most common color changes. It often means that food is moving through your intestines too quickly (a condition known as rapid transit), and the green bile doesn’t have enough time to break down and turn brown. It can also be caused by eating lots of leafy greens or certain medications.

Dive deeper into the causes: Why Is My Stool Green? 7 Common Causes

Yellow: The Greasy Indicator

Yellow, greasy, or foul-smelling stool often indicates an excess of fat. This can be due to a high-fat meal or a malabsorption disorder where your body isn’t digesting fat properly. Conditions affecting the pancreas or gallbladder are often linked to yellow stool.

Learn more about the 7 key causes: Why Is My Poo Yellow? 7 Common Causes

Black: The Alarm Bell

Black stool can be harmless, often caused by iron supplements or black licorice. However, it can also be a serious sign of bleeding in the upper gastrointestinal tract (like the stomach or esophagus). This digested blood turns black and tarry (a condition called melena) and always warrants a conversation with a doctor.

Don’t ignore this symptom. Read our guide: Black or Tarry Stool: When to Worry

Red: A Case of Diet or Bleeding

Seeing red in the toilet can be frightening. Often, it’s caused by red-colored foods like beets, cranberries, or tomato soup. However, it can also be a sign of bleeding in the lower digestive tract, such as from hemorrhoids or more serious conditions. It’s crucial to know how to tell the difference.

Learn how to distinguish the two: Red Stool vs. Blood in Stool: What’s the Difference?

Pale, White, or Clay-Colored: The Bile Blocker

If your stool is pale, white, or the color of clay, it usually means that bile is not reaching your stool. This can be due to a bile duct obstruction caused by gallstones, liver problems, or other conditions. This symptom should be taken seriously.

Understand the underlying issues: Why Is My Poo Pale - Common Causes and Why Is My Poo White?

Orange: The Beta-Carotene Clue

Orange stool is less common but is often caused by eating a lot of beta-carotene-rich foods, such as carrots, sweet potatoes, and squash. It can also be caused by certain medications or issues with bile flow.

Explore the causes of this sunny shade: Do You Have Orange Stools?


When to See a Doctor

While many stool color changes are harmless, you should consult a healthcare professional if you experience:

  • Persistent color changes lasting more than a few days without a clear dietary cause.
  • Black, tarry, or bright red stools, which could indicate bleeding.
  • Pale, white, or clay-colored stools, which could indicate a liver or bile duct issue.
  • Stool color changes accompanied by other symptoms like abdominal pain, weight loss, fever, or dizziness.

Frequently Asked Questions (FAQs)

Is it normal for my stool color to change?

Yes, minor changes in stool color are often normal and can be influenced by diet, medications, and hydration levels. However, persistent or dramatic changes should be evaluated by a doctor.

What is the healthiest stool color?

Generally, a medium to dark brown stool is considered the healthiest color, indicating a balanced digestive process and proper bile function.

When should I be concerned about my stool color?

You should be concerned if you notice black, tarry, bright red, pale, white, or clay-colored stools, especially if accompanied by other symptoms like abdominal pain, fever, weight loss, or dizziness. Always consult a healthcare professional for persistent or alarming changes.

Your Go-To Resource for Gut Health

Thank you for reading our ultimate guide. Use this page as your starting point, and click through to the detailed articles to get the full picture. Understanding your stool color is a simple yet powerful tool for monitoring your health.

Curious about a specific color? Try our free poo colour decoder!