What Causes Black or Tarry Stool? What does your poop colour indicate? Pay attention. There's a lot to be learned by the colour and consistency of your stools, as well as the frequency and how easily passed Melena an overview ScienceDirect Topics Melena an overview ScienceDirect Topics Stool Colour Chart A quick clinical guide to interpret stool color changes and their possible causes. Stool appearance can give important clues about gastrointestinal healthbut always correlate with history, examination, and What Does It Mean If My Poop Is Black? Melena Guide