Green poop can be caused by several factors, primarily related to diet, bile pigment, medications, infections, and digestive conditions: Dietary causes:

• Eating large amounts of green leafy vegetables like spinach, kale, and broccoli, which contain chlorophyll, the green pigment in plants, can turn stool green

• Consuming foods or drinks with green or blue food coloring, such as candies, ice pops, or cake frosting, can also cause green stool

• Certain blue or purple foods like blueberries or grape-flavored sodas may result in greenish stool due to the way dyes are processed in the gut

Bile pigment:

• Bile, a greenish-yellow fluid produced by the liver to digest fats, normally changes color as it moves through the intestines. If food moves too quickly through the gut (e.g., diarrhea), bile doesn't have time to break down fully, leading to green-colored stool

• High-fat diets, such as keto, increase bile production, which can cause bright green stool

• Removal of the gallbladder can temporarily alter bile flow and stool color

Medications and supplements:

• Iron supplements can darken stool and sometimes give it a green hue

• Antibiotics may disrupt gut bacteria balance, affecting stool color

• Certain antacids and antidiarrheal medications can also cause green stool

Infections and medical conditions:

• Bacterial infections like Salmonella or E. coli, viral infections such as norovirus, and parasitic infections can speed up intestinal transit, resulting in green stool

• Gastrointestinal disorders like Crohn’s disease, celiac disease, irritable bowel syndrome, or overuse of laxatives can cause rapid bile movement and green stool

In summary, green poop is often harmless and linked to diet or medications but can also indicate infections or digestive issues if persistent or accompanied by other symptoms