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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.
Mostly dark-colored foods and iron pills cause black stools. But bleeding in the upper GI tract due to peptic ulcers, gastritis, and cancer can also turn your poop black. Black poop can be caused by dark-colored foods and drinks you had â say black licorice or blueberries. Taking iron supplements or certain painkillers can also turn your poop black. More serious causes include bleeding in the upper GI tract due to peptic ulcers, gastritis, esophageal varices, or cancer.