Going to the bathroom is your body's natural way of getting rid of things you don't need. Even when you eat the healthiest diet, there are still parts of your food your body discards as waste, and this is why you pee and poo.
You've probably noticed that poop is almost always brown. The shade can change, usually depending on what you’ve eaten, but some form of brown is almost always the case.
Poop gets its brown color from what’s in it – a mixture of wastes, bacteria, and water plus some special helpers your body uses to assist with digestion. Among these is bile, which is green-yellow, and bilirubin, which is brownish.
It’s the combination of green-yellow bile, brownish bilirubin, and the specific things you’ve eaten that give your poop its well-known color!