There are certain patterns in the analysis of fecal matter such as consistency, smell, size, color that can reveal our state of health. In this article you will learn what the stools tell us according to their color and shape.

While this may be an unpleasant subject, it is not a minor issue when it comes to health. As we all know, a thorough analysis of fecal matter should be carried out in health centers such as hospital laboratories, clinics and sanatoriums.

However, there are certain general “parameters” or “guidelines” that you should know about stools that will let you know how well or badly you are in health and even make a visit to the doctor, if necessary, to prevent or prevent the development of certain diseases.


Smell : The bad smell of faeces and gases is caused by bacteria and is related to the food we eat. The smell is stronger when we eat chemical or artificial foods.

Size : The common and normal in the beams is a narrow and elongated size. However, when its shape becomes increasingly narrow or refined it can be the sign of a tumor or cancer that obstructs the colon. Also, those who suffer from irritable bowel can stool closely. On the contrary, when the stools are very thick or broad they can indicate lack of muscular toning in the colon due to a deficiency in the absorption of minerals, lack of exercise or low levels of fiber in the organism.

The width of the excrements can vary between 2 to 5 centimeters and as for the length, this can be between 20 to 30 cm to be considered healthy. In contrast, short stools or small segments can be the indicator of constipation and a deficient work of the colon in the processing of food, to which can be added the lack of moisture necessary due to a lack of the necessary hydration levels.

Consistency:  Faeces with a slight mucus that covers them should be considered normal, since it is a substance that produces the intestine to maintain the walls of the same in conditions of adequate wetting and lubrication. In contrast, the presence of excessive mucus can be the indicator of a disease: from an infection of the intestines that usually causes diarrhea to more serious pathologies such as Chrohn’s disease, ulcers, colitis and even cancer.


The former usually consist of fat or high levels of gas within the fermentation process. When there are minerals that have not been digested, in contrast, stools tend to sink, just as when their conformation is compact due to lack of moisture.


A good question The excrement when it presents / displays rest or small portions of foods indicates to us that these foods were not digested completely, that is to say, they could not be absorbed by our organism, particularly by the digestive system. This type of stool is not a cause for concern unless it is accompanied by diarrhea, a significant weight loss or an alteration in the habits to evacuate. In these latter cases, it is advisable to consult with the doctor.

Frequency. The frequency of defecation is variable in each person and organism. For this reason, talking about constipation is relative, since it depends on what can be considered regular for each one. In general terms, it is normal to evacuate 3 times a week at least and between 2 to 3 times a day at the most. The average time to convert food into excrement is between 18 to 72 hours.

Regarding frequency, we find two undesirable extremes: constipation, which implies a slow and difficult metabolism of food, and means a considerable and prolonged effort in time for the elimination of waste and, on the other hand, diarrhea, which implies production of bowel movements very frequent with the presence of liquid fecal matter.

Color of the stool. The normal and habitual color of the stool is brown brown in light or dark tone. However, they can occur in different tones that may be related to a disorder or pathology, namely:

  • Red pink: It is a sign of active bleeding.
  • Black: may indicate a non-active bleeding.
  • Yellow: This color is commonly seen among those who practice vegetarianism. It may also be due to disorders of the liver and gallbladder
  • Red:orange: characteristic in people with essentially carnivorous habits.
  • Green: It can indicate liver disorders or the consumption of certain medications.

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