What is black stool, how to distinguish between true and false black stool

The color of black stool can generally be bright black, brown, black green, etc. 1. Bright black If the patient has gastrointestinal bleeding, the blood will be digested in the gastrointestinal tract and mixed with feces to form bright black stool. 2. Brown black stool brown may be related to the intake of food or drugs, such as eating iron-rich foods or oral iron agents, such as ferrous sulfate, iron protein succinate, iron dextran, etc., will make the stool color brown. 3. Black-green liver secretes bile, if liver problems occur, bile may affect the color of stool, making it appear black-green. True or false black stool can generally be distinguished by observing color, reviewing diet history, observing accompanying symptoms, etc. 1. Observing the color True black stool usually appears very dark black, compared with false black stool will darken the color of stool, but usually does not appear true black. 2. Review the dietary history can also review the recent intake of food, if eating a lot of iron-containing foods, such as dark chocolate, brown sugar, animal liver, etc., may lead to dark stool color, this time is usually not true black stool. 3. Observe accompanying symptoms In addition to defecation color, you can also observe whether there are discomfort symptoms in the body. If there are nausea, vomiting, abdominal pain and other discomfort symptoms, it may be true black stool caused by gastrointestinal bleeding. If there are no other accompanying discomfort symptoms, it may be false black stool caused by improper diet.