What Causes Mucus in Stool?

November 24, 2018

The digestive system has several membranes throughout the intestines. These membranes are responsible for secreting mucus to completely lubricate the digestive tract. At the same time, the mucus secretion ensures an easy evacuation of waste.

With normal amounts of mucus, the stomach is capable to function properly and the body can continually absorb nutrients and eliminate waste through stools. However, all of those processes change when mucus levels are higher than normal. This might take place due to an infection, which in turn indicates something isn’t right in your digestive system.

What can cause excessive amounts of mucus in stools?

You might also be interested in reading: 5 Digestive Disorders that Can Cause Weight Gain

What diseases can cause mucus in stools?

Ulcerative colitis

Ulcerative colitis

In cases of ulcerative colitis, the colon’s entire mucus membrane becomes increasingly inflamed until ulcers eventually form. This is due to an irritation in the intestines, which lack protection from acids. This doesn’t only imply causing discomfort, but also to specific symptoms, such as large amounts of mucus in stool.

Bacterial infections

The presence of many kinds of bacteria in the colon and in different parts of the intestine is normal. These bacteria are helpful for digestion.

However, when the bacterial balance is offsetthe bacteria can lead to infections that can cause symptoms apart from diarrhea. These symptoms may consist of mucus being in stools, or in some cases, blood streaks, which require immediate medical attention.

Intestinal obstruction

When you don’t drink sufficient amounts of water, over time your body may fail to regularly secrete gastric hormones and suffer from yeast infections. The consequences are frequent episodes of constipation that eventually obstruct the digestive tract due to the constant mucus production in stools. Many of these cases require surgical intervention.


In regard to hemorrhoids, internal hemorrhoids are usually the causes of mucus in stools. Theyswelling is due to the strain caused by pushing too hard when defecating. Hemorrhoids irritate the mucus membrane and makes them secrete large amounts of mucus. This indicates that the veins in the area require more dilation.


The colon has small pouches, known as diverticula. When these small pouches swell, it’s a condition called diverticulitis. This medical condition will eventually produce mucus in stools and other symptoms, which in many cases are abdominal pain and bloody stools.

Colon polyps 

If there are polyps present in any area of the colon, the irritation that they can cause might also harm the mucus membranes as well, causing them to secrete mucus in stools. It can indicate there might be a problematic colon cyst.

Read the following article: 12 Symptoms of a Damaged Gut Flora

Crohn’s disease

Due to it being a chronic illness, having Crohn’s means that you will always experience its symptoms because it has an immunological origin. While you can treat some of the clinical symptoms, there is no definitive cure.

One of the symptoms of Crohn’s is mucus in stools that results from a completely swollen colon and swollen mucus-secreting glands, which requires palliative treatment. After learning about the many potential causes of mucus in stools, it will be helpful for you to determine what’s causing you to experience these symptoms.

If you know the cause, you can decide which of the treatments that your doctor suggests will work best for you. Picking the right one will help you keep your large intestine in good health and functioning properly.