What Does It Mean If Your Stool Is Oily?

Medically Reviewed on 10/19/2022
oily stool
Changes in the stools are the most noticeable symptom of steatorrhea.

Steatorrhea or oily stool is due to the excessive amounts of fat in the stool. Fatty stools vary from normal stools. It could be loose stools, smellier, pale like clay, and float.

Occasional oily stools after a heavy, fatty meal are nothing to worry about. However, if you have them consistently, it indicates improper digestive system functioning.

Steatorrhea is not a disease. Instead, it is a consequence of many conditions that affect the various organs of the digestive system.

Oily stools mean that there is too much fat in your stool.

  • It is a sign of fat malabsorption.
  • This indicates that your digestive system is having difficulty absorbing and breaking down fats.
  • This issue could affect one or more of your organs.

What are the symptoms of steatorrhea or oily stool?

Changes in the stools are the most noticeable symptom of steatorrhea.

Changes that you may observe in stools include:

  • Bulky stools
  • Oily
  • Foul smell
  • Pale colored
  • Foamy
  • Loose
  • Greasy
  • Foamy stools

Other symptoms of oily stools include:

What are the causes of steatorrhea?

Steatorrhea can be caused by conditions affecting your pancreas, small intestine, bile ducts, and liver.

Common foods and drinks that cause steatorrhea include:

  • High-fat fish, such as escolar or oily fish, fatty tuna fish
  • Excessive consumption of alcohol
  • Nuts, especially whole nuts with shells intact
  • Essential oils
  • Whole wheat products
  • Coconut oil and palm kernel oil consumption
  • Artificial fats


Pancreatitis is inflammation of an organ in the abdomen called the pancreas. See Answer

Is steatorrhea an emergency and how is it diagnosed?

Steatorrhea alone is not an emergency, but if it is consistent and associated with any other medical conditions, seek medical advice from your healthcare provider. It is very important to be diagnosed and treat the underlying condition that results in oily stools.

Consult your doctor immediately if you experience any symptoms of malabsorption, such as cramping in the abdomen and weight loss, and changes in your stools, such as oily, foamy, bulky, or color.

Your doctor will ask you detailed questions about your medical history and symptoms before recommending common fecal tests.

  • Qualitative test of fecal fat: Measures the number of fat globules in one stool sample. Typically, fewer than 50 neutral fat and 100 fatty acid globules are seen under a microscope.
  • A quantitative test of fecal fat: Stool samples are collected for two to four days. Then, all the samples are studied to know the total amount of fat in each day’s stool. Average results contain two to seven grams per 24 hours for adults, with fat about less than 20 percent of the solid stool sample.

How is steatorrhea treated?

To treat steatorrhea, your underlying condition must be treated by a healthcare provider.

You may require additional treatment to avoid complications of fat malabsorption. Long-term fat malabsorption can result in severe fat-soluble vitamin deficiencies (A, D, E, and K).

Treatment for various levels of malnutrition and its complications could be required.

Medically Reviewed on 10/19/2022
Image Source: iStock image

Steatorrhea. https://my.clevelandclinic.org/health/symptoms/24049-steatorrhea-fatty-stool

What Is Fecal Fat? https://www.webmd.com/digestive-disorders/what-is-fecal-fat

5 Things Your Poop Can Tell You About Your Health. https://www.hopkinsmedicine.org/health/wellness-and-prevention/5-things-your-poop-can-tell-you-about-your-health