Malabsorption: Signs Your Body Isn’t Absorbing Nutrients Properly

Malabsorption happens when the digestive system has difficulty absorbing certain nutrients from food. Depending on the cause, it may affect the absorption of fats, proteins, carbohydrates, vitamins, minerals, or a combination of nutrients.

Symptoms can vary and may develop gradually. Some people experience ongoing digestive symptoms, while others may first notice unexplained weight loss or learn they have a nutrient deficiency through testing. Because these symptoms can have many possible causes, they do not necessarily mean you have malabsorption.

Understanding the possible signs and knowing when to talk with a healthcare provider can help determine whether further evaluation is needed.

What Malabsorption Actually Means

​Malabsorption occurs when the digestive system has difficulty absorbing one or more nutrients from food. It can affect nutrients such as fats, proteins, carbohydrates, vitamins, or minerals. Some conditions interfere with food breakdown before nutrients can be absorbed, while others affect the lining of the small intestine, where much nutrient absorption takes place.

The type and severity of malabsorption can vary depending on the underlying cause. Malabsorption is different from not getting enough nutrients through your diet. A person may eat a balanced diet and still develop a nutrient deficiency if a digestive condition interferes with digestion or absorption.

Possible Signs of Malabsorption

​Malabsorption can cause different symptoms depending on the underlying condition and which nutrients are affected. Possible signs may include:

• Persistent diarrhea
• Unexplained weight loss
• Ongoing bloating or abdominal discomfort
• Changes in stool, such as stools that are greasy, pale, unusually foul-smelling, or difficult to flush
• Ongoing fatigue or weakness
• Nutrient deficiencies identified through blood tests

These symptoms can have many possible causes and do not necessarily mean you have malabsorption. If they persist, worsen, or occur together, talk with a healthcare provider about whether further evaluation is needed.

Why Symptoms Vary by Nutrient

Malabsorption can affect different nutrients depending on the underlying cause and the part of the digestive system involved. As a result, symptoms can vary widely from person to person. For example, problems absorbing fat may cause greasy, difficult-to-flush stools and can affect absorption of fat-soluble vitamins such as vitamins A, D, E, and K. Problems absorbing vitamin B12 may contribute to symptoms such as fatigue, numbness, tingling, or balance changes.

These symptoms alone cannot tell you which nutrient may be low or confirm that malabsorption is the cause. Sharing your symptoms, when they started, and any changes in your digestion, weight, or appetite can help your healthcare provider decide what evaluation is appropriate.

Underlying Causes of Malabsorption

​Several digestive conditions can interfere with digestion or nutrient absorption. The nutrients affected can vary depending on the condition and the part of the digestive system involved. Celiac disease can damage the small intestine lining and interfere with nutrient absorption. Crohn's disease can cause inflammation in different areas of the digestive tract, which may affect the absorption of certain nutrients. Chronic pancreatitis can reduce the digestive enzymes needed to break down food properly.

Certain gastrointestinal surgeries, including gastric bypass or removal of part of the intestine, can also change how nutrients are digested or absorbed. Other conditions can also cause malabsorption. Identifying the cause matters because evaluation and treatment depend on the underlying condition.

How Providers Evaluate Suspected Malabsorption

​Evaluating possible malabsorption usually begins with your symptoms and health history. Your healthcare provider may ask about changes in your bowel habits, appetite, or weight, how long your symptoms have been present, your diet, medications and supplements, previous surgeries, and other health conditions. Depending on your symptoms and history, your provider may recommend blood tests to check for nutrient deficiencies or other concerns. Stool tests may also be used in certain situations to evaluate digestion or look for signs of an underlying digestive condition.

Additional testing, such as imaging or an upper endoscopy, may be recommended when appropriate. Not everyone with digestive symptoms needs the same tests. Your healthcare provider can determine the right evaluation based on your symptoms and health history.

Why Self-Diagnosis Can Be Misleading

​Digestive symptoms such as bloating, diarrhea, abdominal discomfort, fatigue, or weight changes can have many possible causes. Having one or more of these symptoms does not necessarily mean you have malabsorption.

Avoid making major changes to your diet or starting high-dose supplements based on symptoms alone. Unnecessary food restrictions can make it harder to meet your nutritional needs, and supplements may cause side effects or interact with medications. If your symptoms persist or worsen, talk with a healthcare provider. An evaluation can help determine what may be contributing to your symptoms and whether dietary changes, supplements, additional testing, or other treatment may be appropriate.

When to Talk with a Provider

Talk with a healthcare provider if your digestive symptoms are persistent, worsening, or affecting your ability to eat or maintain your weight. You should also seek evaluation if digestive symptoms occur along with unexplained weight loss, ongoing diarrhea, fatigue or weakness, or a nutrient deficiency identified through testing.

Some symptoms require more immediate medical attention. Seek prompt care for severe or worsening abdominal pain, repeated vomiting, signs of dehydration, black or bloody stools, or other symptoms that are sudden or severe. Your healthcare provider can evaluate your symptoms and determine whether additional testing or a referral to a gastroenterologist may be appropriate.

Getting Answers About Malabsorption

​Malabsorption can develop for different reasons, and symptoms alone cannot confirm that your body is having difficulty absorbing nutrients. If you have persistent digestive symptoms, unexplained weight loss, or a nutrient deficiency that may be related to a digestive condition, an evaluation can help determine what may be contributing.

Augusta Health Gastroenterology evaluates and treats digestive conditions that can interfere with digestion and nutrient absorption. Your care will depend on your symptoms, health history, and the underlying condition identified. Call 540-324-3982 or visit our website to find an Augusta Health provider near you.