# Nutrition in autoimmune hepatitis
Role of nutrition in onset and progression
ResearchediPositive results in clinical studies, not yet standard treatment
Nutrition plays no direct role in the onset of autoimmune hepatitis. The disease develops from a disorder in the immune system, not from what you eat. However, there is evidence that certain dietary patterns and certain substances in food influence how the immune system responds and how well the liver can function.
ResearchediPositive results in clinical studies, not yet standard treatment
Studies suggest that gut flora (bacteria in your intestines) plays a role in autoimmune diseases, including autoimmune hepatitis. Diet partly determines which bacteria grow in your gut. This does not mean you can cure the disease through diet, but that good nutrition can play a supportive role.
Nutrition and liver function
ProveniIncluded in official guidelines, or approved by EMA or FDA
A damaged liver can process certain nutrients less well. Particularly proteins and certain vitamins (fat-soluble vitamins A, D, E and K) can become problematic if the liver is severely affected. This is measured in check-ups via blood values.
ResearchediPositive results in clinical studies, not yet standard treatment
With advanced liver damage (cirrhosis), some patients may benefit from nutrition that is easier for the liver to process. However, this is highly dependent on the individual situation, and should be discussed with your doctor or dietitian based on your specific blood values and symptoms.
Nutrients and inflammatory responses
ResearchediPositive results in clinical studies, not yet standard treatment
Research is examining links between certain food components (such as omega fatty acids, polyphenols from vegetables and fruits, and fibres) and autoimmune responses in general. This research has not yet progressed to the point where it leads to specific recommendations for patients with autoimmune hepatitis.
ResearchediPositive results in clinical studies, not yet standard treatment
Some studies suggest that a dietary pattern with plenty of vegetables, fruit, fish and unsaturated fats (such as olive oil) may be beneficial for inflammation-related diseases. These are the same patterns also recommended for general health, but there is no specific evidence that this directly improves autoimmune hepatitis.
Supplements and dietary supplements
Advised againstiProven ineffective or harmful, or dangerous in combination with your treatment
Nutritional supplements can be risky in autoimmune hepatitis. Recent research shows that certain over-the-counter supplements (dietary supplements that are available without prescription) can cause liver damage, especially in people whose liver is already affected. This applies to some herbs, plant extracts and other natural products.
ResearchediPositive results in clinical studies, not yet standard treatment
For certain vitamins (for example D or B12), replacement therapy may be needed, depending on your blood values. However, this should always be started under the guidance of your doctor or dietitian, not on your own initiative.
Alcohol and other harmful substances
ProveniIncluded in official guidelines, or approved by EMA or FDA
Alcohol is harmful to the liver and is not recommended in autoimmune hepatitis. This applies regardless of how much you drink; even small amounts can cause additional damage to a liver already affected by the disease.
ResearchediPositive results in clinical studies, not yet standard treatment
Certain food additives and preservatives can trigger an immune reaction in sensitive people. This varies greatly from person to person and is difficult to predict in advance.
Nutrition in specific complications
ResearchediPositive results in clinical studies, not yet standard treatment
If advanced liver damage (cirrhosis) develops, certain complications can occur (such as fluid accumulation or confusion from metabolic disorders). In those phases, nutrition plays a more active role, but then it is about highly specialized advice that must be completely tailored to your individual situation. This may, for example, relate to salt intake, fluid intake or protein types.
ResearchediPositive results in clinical studies, not yet standard treatment
With nausea or reduced appetite (common in liver disease), small, regular meals and nutrient-dense food can help. This too should be determined in consultation with your team.
Interactions between nutrition and treatment
ResearchediPositive results in clinical studies, not yet standard treatment
Immunosuppressive medicines (used in autoimmune hepatitis) can affect how you absorb and use nutrients. Certain foods can also interact with medicines, for example by changing their absorption.
ResearchediPositive results in clinical studies, not yet standard treatment
Grapefruit and grapefruit juice can change how certain medicines work and are therefore usually not recommended. Your doctor or pharmacy can tell you which foods and food supplements do not work well with your specific medicines.
Practical guidance
Your dietitian or nutritionist can work together with your team (your gastroenterologist or hepatologist) to determine which dietary choices are most suitable for your situation. This may change as your disease develops or as treatment progresses.
Blood test results often give an important indication of how your liver is functioning and what dietary adjustments may be needed. Making major dietary changes on your own, or starting supplements, is risky with autoimmune hepatitis.
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_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._