# Nutrition in primary sclerosing cholangitis
General dietary pattern
In primary sclerosing cholangitis (PSC), digestion and nutrient absorption change because the bile ducts are damaged. This can affect how your body absorbs fats and certain vitamins. Many patients benefit from regular contact with a dietitian specializing in liver disease, as recommendations can differ depending on how advanced the disease is and what other symptoms you have.
ResearchediPositive results in clinical studies, not yet standard treatment
Studies show that patients with PSC often have deficiencies in certain fat-soluble vitamins (A, D, E, K) and minerals, because the damaged bile flow makes fat digestion more difficult. This is an important point to discuss regularly with your doctor or dietitian.
Fats and digestion
Because the bile ducts are damaged, bile cannot flow properly into the intestines. Bile is needed to digest and absorb fats. Some patients notice this by tolerating fatty meals less well, which can lead to diarrhoea or abdominal discomfort.
ProveniIncluded in official guidelines, or approved by EMA or FDA
Many patients benefit from limiting large amounts of fat in one meal, and some tolerate certain types of fat better than others. However, this is very individual and deserves attention from someone familiar with your situation.
Some studies suggest that certain nutrients that affect the so-called 'gut-liver axis' may be important, but this is still largely experimental and is being intensively researched.
Vitamin deficiencies and supplements
Because fat-soluble vitamins (A, D, E and K) are harder to absorb, many patients with PSC have low levels of these vitamins. Vitamin K is particularly important for blood clotting, and vitamin D plays a role in bone strength and immune function.
ProveniIncluded in official guidelines, or approved by EMA or FDA
Regular checking of vitamin levels (especially D, A, E and K) is part of standard care in PSC, as deficiencies can lead to complications.
ResearchediPositive results in clinical studies, not yet standard treatment
Recent studies suggest that vitamin D supplementation may be associated with a lower risk of certain liver complications and cholangiocarcinoma in patients with PSC, but this research is not yet complete and your healthcare provider will determine whether this applies to you. This is not about taking vitamins on your own without supervision.
For other vitamins and minerals (iron, calcium levels, B vitamins), the same applies: your GP or liver specialist can determine whether supplementation is needed based on your own blood values and condition.
Protein intake and muscle mass
ResearchediPositive results in clinical studies, not yet standard treatment
Recent research shows that certain patients with PSC and concurrent bowel inflammation (inflammatory bowel disease) may be more susceptible to muscle loss. This means that adequate protein intake throughout the day may be important, but this too is very individual and requires attention from your healthcare provider or dietitian.
Regular physical activity can also play a role in maintaining muscle mass, something you can discuss with your doctor.
Nutrition and medication use
Some medications used in PSC (for example, certain medications for the bile ducts), can influence how your nutrition works, or vice versa. This is a point where your dietitian and your healthcare provider need to work well together.
It is important to always keep your dietitian and doctor informed about what you eat and drink, especially if you are considering supplements or special foods, as certain combinations can interfere.
Salt intake and fluid retention
In severe liver dysfunction, fluid accumulation (oedema) can sometimes become an issue. In that phase, salt restriction is sometimes recommended. However, this very much depends on your current liver situation and is something your doctor will indicate when it applies.
Drinking and alcohol
Advised againstiProven ineffective or harmful, or dangerous in combination with your treatment
Alcohol can cause additional damage to an already damaged liver. This is clear advice that applies to all patients with PSC.
For other beverages (water, coffee, tea) there are no specific restrictions, although many patients find that certain beverages affect their digestion.
Special nutritional policy
Sometimes with PSC research is conducted to see whether certain food components or traditional foods may play a role in helping stabilize the disease. This research is ongoing, but neither independent experiments nor the use of special 'miracle foods' without medical supervision is recommended. Your doctor or dietitian can help you determine whether something is relevant for you based on current scientific evidence.
Summary: follow-up with your team
Most patients with PSC benefit from regular contact with:
- Your liver specialist, who knows your overall situation
- A dietitian specialized in liver diseases, who can create a nutrition plan that suits you
- Your general practitioner, for monitoring of vitamin levels and general well-being
Nutrition is not the treatment for PSC, but it can contribute to your quality of life, prevention of certain complications and support of your body while you receive medication.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._