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Yellow stool is common in a variety of gastrointestinal diseases, but often it's simply nothing more than a case of anxiety. Rarely is yellow stool the only symptom, so click here to take my anxiety test and find out if you may be living with an anxiety disorder.
Bilirubin concentration can vary the color of stool from light yellow to almost black. Changes in the chemical structure of the bilirubin can cause stool to turn green or yellow. Yellow stool also may occur if stool is dilute or there is a reduction in the amount of bilirubin that is produced by the liver. Bacteria and digestive enzymes in the intestine can act on the bilirubin and change its color. Most stool-to-stool changes in color have little meaning.