# Nutrition in rheumatoid arthritis
Anti-inflammatory nutrients
In rheumatoid arthritis, the role of nutrition is primarily viewed in light of inflammatory processes. Research suggests that certain nutrients can influence the degree of inflammation in the body.
**Antioxidants** — substances that can neutralize harmful free radicals — are being studied in relation to inflammatory markers.
ResearchediPositive results in clinical studies, not yet standard treatment
A recent study showed that higher antioxidant intake in the diet was associated with less inflammation, better sleep and better quality of life in patients with rheumatoid arthritis. This does not mean that antioxidants cure the disease, but they appear to be part of a pattern in which patients feel better.
Antioxidants are found in vegetables (especially dark green and colored), fruit, nuts, seeds and herbs. What is preferable and what quantities are suitable for your situation is best discussed with your dietitian or doctor.
Omega-3 and inflammation
Research suggests that certain fatty acids — in particular **omega-3 fatty acids** from fish and plant sources — may help lower inflammatory markers.
ResearchediPositive results in clinical studies, not yet standard treatment
However, this is not a replacement for medication, but can be part of an overall dietary pattern.
Note: if you use blood thinners, you should always discuss major changes in your omega-3 intake with your healthcare provider, as certain nutrients can interact with medications.
Gut microbiome and immune response
New research focuses on the **gut flora** (microbiome) and its role in rheumatoid arthritis. Studies examine how certain bacteria and fermented food products can help keep the immune system better balanced.
ResearchediPositive results in clinical studies, not yet standard treatment
The idea is that a healthy gut flora can contribute to better regulation of inflammatory reactions through what scientists call the 'gut-joint axis'.
This explains why some patients report benefit from dietary patterns rich in fermented foods (yogurt, sauerkraut, tempeh) or foods high in fiber that feed 'good' bacteria. However, this is not standard treatment, and for each individual it may work differently.
Protein intake and muscle mass
**Sarcopenia** — loss of muscle mass — is a serious issue in rheumatoid arthritis, especially in long-term disease or low activity levels. Research shows that insufficient muscle mass is associated with worse outcomes.
ProveniIncluded in official guidelines, or approved by EMA or FDA
Adequate **protein** in the diet is therefore important for maintaining muscle mass. This is especially true if you have difficulty moving due to pain or fatigue. What amounts of protein and from which sources are best for you is determined together with your dietitian, especially in relation to any kidney problems (as rheumatoid arthritis sometimes affects kidney excretion functions).
Special dietary patterns
Autoimmune Protocol (AIP) The **Autoimmune Protocol** is a dietary pattern that avoids certain foods (grains, dairy, nuts, seeds, nightshade family) for a period. Some patients report improvements in symptoms.
ExperimentaliOngoing in study setting, outcome still unknown
Qualitative research into patient experiences shows that some benefit from it, others do not, and that the strict approach is difficult for many to maintain. If you consider this, do so under the guidance of a dietitian who understands rheumatoid arthritis, so that your diet does not become unbalanced.
Gluten-free or dairy-free There is no evidence that gluten-free eating helps all patients, unless you have true celiac disease or gluten sensitivity.
UnproveniNo scientific evidence that it works
The same applies to dairy-free eating. Individual experiences vary widely, and studies show no consistent benefit for the group.
Drug interactions
Certain nutrients can affect the medications you use for rheumatoid arthritis:
- **Vitamin K** (green leafy vegetables) can change the effectiveness of certain blood thinners if you use them. This does not mean you should avoid vegetables, but you should discuss this question with your doctor or pharmacist.
- **Folic acid** is important when using certain rheumatoid arthritis medications (methotrexate); your doctor usually provides additional advice on this.
- **Alcohol** can enhance the effects and side effects of some medications.
Nutrition and fatigue
Patients with rheumatoid arthritis often report severe fatigue, which can persist despite good medication treatment. Research suggests that a **regular eating pattern** with sufficient energy, proteins and micronutrients can help keep energy levels stable.
ResearchediPositive results in clinical studies, not yet standard treatment
This is, however, not a substitute for treating inflammation itself.
Severe fatigue makes it difficult to stay active, which in turn affects muscle mass. This creates a vicious circle; nutrition plays a supporting role here.
Body weight
Overweight is associated with more inflammatory signals in the body and can worsen pain.
ProveniIncluded in official guidelines, or approved by EMA or FDA
But drastic diets are not recommended, because rapid weight loss affects muscle mass and can worsen fatigue — precisely something you want to avoid with rheumatoid arthritis.
Targeted, gradual dietary adjustments — preferably together with a dietitian — fit better into the picture.
Supplements
Various supplements (turmeric, juniper berry, fish oil, vitamins) are promoted for rheumatoid arthritis. Science is still in its infancy here.
ResearchediPositive results in clinical studies, not yet standard treatment
Some studies point to modest benefits of certain substances, but this is not standard treatment and the evidence is not strong.
More important: supplements can interact with your medications. Always tell your doctor or pharmacist what you take, including 'natural' products.
Practical tips
- Work together with a **specialized dietitian** who has experience with rheumatoid arthritis and knows how medications affect nutrition.
- Eat **regularly** and ensure stable energy and nutrient intake throughout the day.
- Focus on plenty of **vegetables, fruit, whole grains and sufficient protein** — not because this is 'healing', but because it supports your body in maintaining strength and resistance.
- If you want to change your eating patterns (gluten-free, vegetarian, etc.), do this **gradually** and monitor how you feel and function.
- Don't forget medications: nutrition plays a **supporting role**, not a replacing role.
_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._