
Everything You Need to Know about Black Stools
Stool color indicates the human intestinal condition. It is influenced by the food we eat and the amount of bile produced. When the food and bile pigments travel through the gastrointestinal tract, through the mouth to rectum, react chemically with enzymes, thus causing stool to have a color. While brown or green color is considered normal, black stool indicates bleeding in the upper gastrointestinal tract, which consists of esophagus, stomach, and duodenum.