This results in a by-product called stercobilin, which, in turn, makes poop look brown-ish. Without this stercobilin, your poop would typically look grey-ish/white. Because of this, a sure sign you are having problems with bile production, such as a blocked bile duct by a gall stone or something more serious like pancreatic cancer, is if you notice your poop is this white/grey-ish color. In the end, brown poop is a pretty good sign you are a relatively healthy individual. Some other common poop colors that generally aren’t a good sign of health are as follows: If you notice your poop is red, this could be a sign of internal bleeding or could just mean you’ve recently eaten beets. If the cause is bleeding and the bleeding is from your stomach or throat, however, your poop won’t be red, but rather black and will smell worse than that time you decided you should eat a box of Twinkies and a box of Cheesy Handi-Snacks all in one sitting.
