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Bright orange specks may show up in your bowel movements, though this should not actually color your bowel movements orange. Dr. Paredez continues, âOrange diarrhea may be the result of infectious diarrhea, which causes rapid transit through the intestine, which limits the amount of bile in the stool. Bile duct cancer and pancreatic cancer are the life-threatening medical conditions that can result in orange diarrhea.
Stools-bloody; Hematochezia; Melena; Stools-black or tarry. Heavy or rapid bleeding in the upper GI tract can cause bright red stools. Eating black licorice, lead, iron pills, bismuth medicines like Pepto-Bismol, or blueberries can also cause black stools. Beets and tomatoes can sometimes make stools appear reddish.