Exocrine Pancreatic Insufficiency (EPI): Symptoms and Treatment in the UK

Exocrine Pancreatic Insufficiency (EPI) is a medical condition where the pancreas does not produce enough digestive enzymes to break down food. These enzymes—lipase, amylase, and protease—are essential for absorbing fats, carbohydrates, and proteins. When these nutrients are not properly absorbed (malabsorption), it can lead to significant digestive distress and long-term health complications.

In the UK, many patients with chronic digestive issues may be suffering from undiagnosed EPI. It is often secondary to other conditions that damage the pancreas or disrupt its ability to release enzymes into the small intestine. Because the symptoms often overlap with other conditions like IBS or Coeliac disease, a targeted medical assessment is necessary for an accurate diagnosis.

Digestive Changes

The most characteristic sign of EPI is steatorrhoea. This refers to stools that are pale, oily, particularly foul-smelling, and difficult to flush away. This happens because fat remains undigested and passes straight through the digestive tract.

Other common symptoms include:

• Persistent abdominal bloating and flatulence.
• Cramping or stomach pain, especially after eating fatty meals.
• Frequent, urgent diarrhoea.
• Unexplained weight loss despite eating a normal diet.
• Signs of vitamin deficiency, such as poor night vision or weakened bones (due to lack of fat-soluble vitamins A, D, E, and K).

EPI is rarely a standalone condition and is usually a result of underlying damage to the pancreatic tissue. According to NHS and NICE guidance, the most frequent causes include:

• Chronic Pancreatitis: Long-term inflammation of the pancreas, often linked to long-term alcohol consumption or smoking.
• Cystic Fibrosis: A genetic condition where thick mucus blocks the pancreatic ducts.
• Pancreatic Cancer: Tumours can block the production or flow of enzymes.
• Gastrointestinal Surgery: Procedures such as gastric bypass or removals of parts of the pancreas or stomach can alter how the body signals for enzyme release.
• Type 1 and Type 2 Diabetes: Long-term diabetes can sometimes lead to reduced pancreatic function.

If you are experiencing persistent digestive issues, a GP will typically begin by ruling out other common conditions. The gold-standard non-invasive test used in the UK is the Faecal Elastase-1 test. This involves providing a stool sample to measure the concentration of elastase, an enzyme produced by the pancreas that remains stable as it passes through the gut.

A low level of faecal elastase is a strong indicator of EPI. Your doctor may also request blood tests to check for nutritional deficiencies, such as low levels of iron, vitamin B12, or fat-soluble vitamins. In some cases, imaging like a CT scan or MRI (MRCP) may be required to look for structural changes in the pancreas, such as calcification or tumours.

The primary treatment for EPI is Pancreatic Enzyme Replacement Therapy (PERT). These are capsules containing a mixture of enzymes (such as Creon or Nutrizym) derived from porcine sources. They are designed to mimic the natural action of the pancreas.

How to take PERT

• Timing: Capsules must be taken with every meal and snack, ideally starting with the first few mouthfuls of food.
• Dose: The dosage is personalised based on the fat content of the meal and the severity of the insufficiency.
• Consistency: If a meal is long (e.g., a three-course dinner), the dose should be spread throughout the meal.

Patients are also advised to stop smoking and limit alcohol intake, as both significantly worsen pancreatic inflammation and reduce the effectiveness of treatment.

If you have noticed a change in your bowel habits, particularly oily or floating stools, it is important to seek medical advice. Speaking to a UK online doctor can be a discreet and efficient first step. During an online consultation, you can discuss your symptoms, medical history, and risk factors.

A private GP can advise on the necessary diagnostic tests, such as faecal elastase, and help interpret results. If you have already been diagnosed with a condition like chronic pancreatitis or have had gastric surgery, an online doctor can help monitor your symptoms and provide a private prescription for PERT if appropriate. They can also provide a referral for further specialist investigations if your symptoms do not improve with initial management.