Green poop can mean several things, most commonly related to diet or digestive processes:

• Dietary causes: Eating a lot of green leafy vegetables like spinach, kale, and broccoli, which contain chlorophyll, can turn stool green. Consuming foods with green or blue artificial coloring, such as cake frosting or certain candies, can also cause green poop

• Bile pigment: Bile, a greenish-yellow digestive fluid produced by the liver, normally changes color as it moves through the intestines. If food moves too quickly through the gut (e.g., diarrhea), bile doesn't break down completely, resulting in green stool

• Medications and supplements: Antibiotics can alter gut bacteria, affecting stool color. Iron supplements and some antacids may also cause greenish stool

• Infections: Certain bacterial infections (like Salmonella or E. coli), viral infections (norovirus), or parasites (Giardia) can speed up intestinal transit, leading to green diarrhea

• Other causes: Medical procedures or conditions affecting bile flow, such as gallbladder removal, can temporarily cause green stool

If green stool occurs without other symptoms and is linked to diet, it is usually harmless. However, if it persists or is accompanied by symptoms like abdominal pain, diarrhea, or fever, medical advice should be sought