Patient's question:
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No
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Doctor's answer:
The color of stool is closely related to the chemical changes of bile. The bile in the upper small intestine contains bilirubin and biliverdin, which give the stool a yellow-green color. When the stool is pushed into the colon, biliverdin is converted back to bilirubin through reduction, at which point the stool appears yellow. Breastfed infants have more acidic stools, and under the action of intestinal bacteria, some bilirubin is converted to biliverdin, making the expelled stool appear light green. This is a normal phenomenon.