why would a humans stool be green
An Answers contributor. Human feces (stools) can appear green for a number of reasons: 1. Bile is a thick, greenish liquid that is secreted by your gall bladder to digest fats, proteins, and carbohydrates in your food and is usually broken down before you pass stools.
1 Eating Green Foods. The first and most obvious reason for a stool to be green is from eating green foods. Green, leafy vegetables contain chlorophyll, which could be coloring the stool green. Green food coloring is also a common reason for stools to be green.  Eating Purple Foods.