Certain foods and medicines can cause black stool. Sometimes, black stool may even signal bleeding in the digestive tract.

As a general rule, stool is brown in color, but normal stool comes in all different shades of brown, yellow, and green, says Dr. Mitzner, who is based in New York.

Yellow: Yellow stool that is also consistently greasy and smells of sour eggs ... However, black stool may also be an indicator of bleeding in the upper gastrointestinal tract, ...

When you take antibiotics, there can be an overgrowth of C. diff. This can cause symptoms like severe diarrhea. While you might notice a change in stool color like yellow poop, there’s no ...

If you're experiencing severe diarrhea symptoms when your poop is green, your stool may be an indication of something more serious and you should contact a physician. Why is my poop green?

Dark He issued a warning about the significance of dark faeces, stating: "Dark stool, especially if persistent, could signify bleeding in the upper gastrointestinal tract, requiring urgent medical ...

Bloody diarrhea, also known as bloody stool or rectal bleeding, can be bright or dark red or tar-like. It can be a symptom of anal fissures, hemorrhoids, infections, inflammatory conditions, and ...