What s the deal with black unformed stools?

Anorectologists advise that the color, texture, and shape of stool are the most reflective of a person's physical health, among which black stool, dry stool, stool syrup, and fine stool are all reflections of diseases. Many patients think that there is nothing to worry about when it turns black, most of it is related to diet, and often ignores the existence of intestinal lesions, delaying the best time for the disease. Black and unformed stools are a manifestation of digestive tract disorders.

When there is bleeding in the esophagus, stomach, duodenum, upper jejunum, and upper gastrointestinal tract such as the pancreas and biliary tract, the iron of hemoglobin in red blood cells combines with sulfide to form iron sulfide under the action of intestinal bacteria, which makes the stool appear black. The softness and color of the stool during upper gastrointestinal bleeding depends entirely on the location of the upper gastrointestinal bleeding, the amount of bleeding, the speed of bleeding, and how long the blood stays in the intestines. If the bleeding is heavy, fast, and stays in the intestine for a short time, the texture of the stool will become soft or even close to liquid, and the color can further change from black to reddish-brown or even bright red.

Only when the amount of bleeding in the upper gastrointestinal tract is relatively small, the bleeding rate is slow, and the bleeding stays in the intestine for a long time, it is possible to present with typical tarry melena stools. Tarry melena is just one typical manifestation of upper GI bleeding. The color of the stool changes during upper gastrointestinal bleeding, which is not always tarry, but very different.

For example, when the amount of blood loss is relatively small, the change in stool color cannot be detected by the naked eye, and it can only be detected through special tests; When the amount of bleeding reaches more than 50 ml, the stool can be seen to turn black with the naked eye. However, in addition to the tarry stools mentioned above, the color of the stool can also change to coffee, reddish-brown or even bright red when there is upper gastrointestinal bleeding.

What causes black stool?

1. The shape of stool is inseparable from the food eaten by the human body, when people eat more colored foods such as pork liver, the color of the stool may also be black, and some foods that can promote intestinal peristalsis can shorten the time of intestinal digestion, resulting in unformed stool, or even loose stool.

2. When the human body is weak in the spleen, cold, blind, and damp, or the abdomen is cold, it may lead to black stool that is not formed, which generally does not lead to this every day, and if you find the source of the disease, you can quickly get rid of this pain.

3 In this case, it is because bacteria and viruses infect the colon, resulting in colon dysfunction, which may turn into colitis, chronic enteritis, etc., but this disease has many other more significant symptoms, such as stool bleeding, abdominal pain, etc.

4. The stool of the patient with this disease is black and viscous (it may not be formed), and other symptoms include fever, abdominal grinding and scraping, etc., which may be inflammation of the digestive tract, abnormal blood vessels, mechanical damage, etc., although the black and unformed stool is only a symptom of the disease, it is easier for the human eye to see, so you need to pay attention to it in life.

What causes black stool?