DefinitionBy Mayo Clinic staff
Green stool — when your feces (poop) looks green — is usually the result of something you ate, such as spinach. Green stool also can occur after you consume certain medications or iron supplements.
Newborns pass a dark green stool called meconium and breast-fed infants often produce yellow-green stools. In older children and adults, green stool is uncommon and rarely cause for concern.
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