Green poop generally means that bile or green pigments from food have passed through your digestive system without breaking down completely. Common causes include:

• Eating large amounts of leafy green vegetables (like spinach, kale, broccoli) which contain chlorophyll, the green pigment in plants

• Consuming foods or drinks with green or blue food coloring, such as candies, frostings, or beverages

• Rapid transit of stool through the intestines, such as with diarrhea, which prevents bile (normally greenish-yellow) from fully breaking down and turning brown

• Use of certain medications or supplements, including antibiotics (which alter gut bacteria), iron supplements, bismuth subsalicylate (Pepto-Bismol), and some antacids

Less commonly, green stool can indicate infections (bacterial like Salmonella or parasitic like Giardia), inflammatory bowel conditions (Crohn’s disease, ulcerative colitis), or other digestive disorders that speed up intestinal transit or affect bile processing

. If green stool is occasional and linked to diet or mild diarrhea, it is usually harmless. However, if it persists or is accompanied by symptoms such as abdominal pain, weight loss, bleeding, fever, or vomiting, medical evaluation is recommended to rule out more serious conditions

. In summary, green poop often results from diet or faster-than-normal digestion but can sometimes signal an underlying health issue requiring attention.