9) Dark urine

We previously mentioned bilirubin, and how this waste substance flows backward along with the bile and enters the bloodstream to cause jaundice. However, that’s not the end of the story. Bilirubin runs along with the blood and needs to be released because it’s a waste product. Since it’s not possible to expel bilirubin into the intestines, the alternative pathway of elimination is the kidneys.
Thus, bilirubin starts to get accumulated and eliminated by the kidneys, and since this substance has a very strong color, it starts making the urine look darker. Darkened urine might be caused by gallstones, but also by kidney infections, hepatitis, and other liver problems. For this reason, it is important to visit your doctor and get your tests done to rule out any possibilities and reach a correct diagnosis.