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Malabsorption

 

Malabsorption involves problems with the body's ability to take in nutrients from food.

Many diseases can cause malabsorption. Most often, malabsorption involves problems absorbing certain sugars, fats, proteins, or vitamins. It can also involve an overall problem with absorbing food.

Some of the causes of malabsorption include:

  • AIDS and HIV
  • Biliary atresia
  • Celiac disease
  • Certain medications (cholestyramine, tetracycline, some antacids, some medications used to treat obesity, colchicine, acarbose, phenytoin)
  • Certain types of cancer (lymphoma, pancreatic cancer, gastrinomas)
  • Certain types of surgery (gastrectomy with gastrojejunostomy, surgical treatments for obesity, partial or complete removal of the ileum)
  • Cholestasis
  • Chronic liver disease
  • Cow's milk protein intolerance
  • Crohn's disease
  • Damage from radiation treatments
  • Parasite infection, including Giardia lamblia
  • Soy milk protein intolerance
  • Whipple's disease

Vitamin B12 malabsorption may be due to:

  • Pernicious anemia
  • Bowel resection
  • Tapeworm infection (such as Diphyllobothrium latum)

Symptoms

 

  • Bloating, cramping, and gas
  • Bulky stools
  • Chronic diarrhea (may not occur with vitamin malabsorption)
  • Failure to thrive
  • Fatty stools (steatorrhea)
  • Muscle wasting
  • Weight loss

Malabsorption can affect growth and development. It also can lead to some illnesses.

 

Exams and Tests

 

Your doctor or nurse will do an exam. Tests that may be done include:

  • Blood and urine tests
  • CT scan of the abdomen
  • Hydrogen breath test
  • Schilling test for vitamin B12 deficiency
  • Secretin stimulation test
  • Small bowel biopsy
  • Stool culture or culture of small intestine aspirate
  • Stool fat testing (See: Quantitative stool fat test)
  • X-rays of the small bowel or other imaging tests

 

Treatment

 

You may need to take extra vitamins and nutrients.

 

Outlook (Prognosis)

 

The outlook depends on what is causing the malabsorption.

 

Possible Complications

 

Long-term malabsorption can result in:

  • Anemia
  • Gallstones
  • Kidney stones
  • Osteoporosis and bone disease
  • Malnutrition and vitamin deficiencies

 

When to Contact a Medical Professional

 

Call your health care provider if you have symptoms of malabsorption.

 

Prevention

 

Prevention depends on the condition causing malabsorption.

 

 

References

Semrad CE. Approach to the patient with diarrhea and malabsorption. In: Goldman L, Schafer AI, eds. Goldman's Cecil Medicine. 24th ed. Philadelphia, PA: Saunders Elsevier; 2011:chap 142.

Hogenauer C, Hammer HF. Maldigestion and malabsorption. In: Feldman M, Friedman LS, Brandt LJ eds. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, PA: Saunders Elsevier; 2010:chap 101.

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      Tests for Malabsorption

       
         

        Review Date: 8/11/2014

        Reviewed By: Jenifer K. Lehrer, MD, Department of Gastroenterology, Frankford-Torresdale Hospital, Aria Health System, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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