Why is My Poop Green?

7. When Red Stools Indicate a Medical Issue

Red stools can be alarming, especially for those who haven't consumed red foods or beverages. Sometimes, red stools highlight a health issue or a serious medical condition. Just as black blood can reveal issues in the upper gastrointestinal tract, a bright red color could indicate that the blood is coming from the lower gastrointestinal tract, such as the large intestine or the rectum. Hemorrhoids, polyps, anal fissures, or inflammatory bowel disease can cause stools to be tinged with bright red blood. Polyps can be an early sign of colorectal cancer and cause rectal bleeding or blood in the stool.