Nutrition for rheumatoid arthritis

Nutrition for Rheumatoid Arthritis

Along with reducing physical exertion, changes in diet are key in managing arthritis. Learn the ways you can modify your diet and feel better.

Rheumatoid arthritis (RA) is the most common autoimmune but also the most severe inflammatory rheumatic disease. It occurs between the ages of 20 and 45, but it can appear at any age. It is more common in women, but older adults and children can also be affected. It is a serious, progressive, and chronic disease of the entire body, most prominently affecting the joints. RA is a disease characterized by phases of improvement or worsening throughout life.

The cause of the disease is inappropriate immune system activity: the body produces antibodies directed against its own proteins. The exact cause is unclear, but genetics are thought to play a role. Women are 3 to 5% more likely to develop RA than men. Emotional stress can trigger the disease and affect its course, along with external factors: cold, humidity, physical exertion, psychological trauma, and unfavorable social conditions, without direct causation. The disease is not contagious.

Signs of Rheumatoid Arthritis

In 80% of cases, RA begins gradually and subtly. Very rarely, it begins subacutely or even acutely, with fever. Patients feel fatigued, lose weight, sweat excessively, and this stage can last for a long time. The earliest symptom is morning stiffness in the fingers. Swelling of small hand joints follows. Initially, morning stiffness lasts a few minutes until the hands loosen up, gradually lasting longer—sometimes several hours.

RA can affect laryngeal joints, causing hoarseness, and involvement of auditory ossicles can reduce hearing. Affected jaw joints make chewing difficult, and spinal joints can also be involved.

A less common but very characteristic sign of RA is subcutaneous nodules, occurring in 10–20% of patients, usually in more severe cases. They are located near affected joints at points subjected to external pressure.

As the disease progresses, damaged cartilage and underlying bone cause joints to gradually lose function and mobility, leading to deformities. Skin lesions may appear due to insufficient blood supply caused by vascular inflammation.

Later in the disease, other joints swell, usually centripetally—from fingers toward shoulders and from toes toward hips. Joints are affected symmetrically, often the same joints in hands and feet. As the disease advances, more joints are involved, pain intensifies (even at rest), swelling becomes constant, mobility declines, and deformities develop in fingers and toes.

Treatment of Rheumatoid Arthritis

Since RA is a progressive inflammatory disease, patients should be advised to:

• Reduce physical exertion and strain

• Get adequate nighttime sleep and at least two hours of daily rest

• Protect against psychological stress

• Follow proper nutrition

• Undergo physical therapy

• Take medications regularly

Medications:

• NSAIDs (nonsteroidal anti-inflammatory drugs) relieve pain and inflammation

• DMARDs (disease-modifying antirheumatic drugs) such as methotrexate, antimalarials, sulfasalazine, leflunomide; methotrexate is the primary drug

• If DMARDs fail and the disease progresses, biological drugs targeting immune system cells and inflammatory factors are used

Nutrition for Rheumatoid Arthritis

Experts and laypeople have suggested various diets for RA, but results have been short-lived or controversial. There are many reports of certain foods or dietary patterns helping in RA, but scientific research has not provided a definitive answer. A universal diet is difficult because some foods suit certain patients while others cannot tolerate them.

Fatty Fish

Salmon, mackerel, tuna, and sardines are rich in omega-3 fatty acids, which directly affect the immune system. Marine fats also prevent the production of leukotriene B4, an inflammatory substance responsible for arthritis symptoms.

A study with 60 patients over 12 weeks, giving daily cod liver oil or placebo, found that just 10 g/day of cod liver oil reduced medication use by 30%, without side effects.

Fish also provides calcium, magnesium, phosphorus, fluoride, iodine, and protein—nutrients important for bone health. Daily intake of cod liver oil, rich in vitamin D and omega-3s, may benefit people with RA, according to Dr. Leslie G. Cleland of Royal Adelaide Hospital, Australia.

Vegetables and Fruits

Daily intake of fresh vegetables and fruits prevents the formation of inflammatory substances. Lightly cooked vegetables like artichokes, kale, broccoli, kohlrabi, celery, fennel, leeks, chard, beets, asparagus, beans, and legumes support a weakened immune system. Olives, onions, and garlic reduce inflammation.

Consuming 2–3 servings of vegetables daily reduces the risk of developing RA by 60% compared to less than one serving per day, according to Harvard University scientists.

Berries (Blueberries, Raspberries, Strawberries)

Berries are rich in phytochemicals, especially anthocyanins and ellagitannins, with anti-inflammatory properties. They retain maximum nutrients when consumed fresh rather than baked. Ideal as a snack or in fruit salads.

Seeds

Pumpkin, flax, and sesame seeds are concentrated sources of “good fats” such as omega-3 fatty acids, alpha-linolenic acid, and monounsaturated fats like oleic acid. They are good sources of manganese, zinc, copper, magnesium, and vitamin E, which are essential for bone and joint health. Studies have shown deficiencies in zinc, magnesium, copper, potassium, and vitamin B6 in RA patients.

Suggested ways to include seeds:

• Mix with fruit and cereals for breakfast

• Add a tablespoon to green salads

• Sprinkle on cooked vegetables

Olives and Olive Oil

Daily consumption of olive oil provides 25 mg of phenolic compounds, enough for protective effects, especially for heart health.

• Oleuropein: a strong antioxidant with antimicrobial, antiviral, anti-inflammatory, and antirheumatic effects

• Oleocanthal: approximately 10% of olive oil’s phenolic content; has anti-inflammatory effects similar to ibuprofen

It is important to consume extra virgin olive oil daily for a steady supply of these active anti-inflammatory compounds.

Decaffeinated Coffee

Decaffeinated coffee may increase the risk of developing RA. The Iowa Women’s Health Study (31,000 women aged 55–69, 1986–1997) found that women drinking four or more cups daily had more than double the risk of developing RA. No association was found with caffeinated coffee.

Green Tea

Polyphenols in green tea have strong antioxidant effects. They also enhance enzymes that prevent oxidative damage. Research in the Journal of Nutrition (2008) by Dr. Hong confirmed anti-inflammatory effects of green tea polyphenols in lab animals.

Green tea also contains small amounts of vitamins: vitamin C (10 times higher than black tea), B2, D, K, beta-carotene, and trace minerals like selenium, magnesium, and fluoride. Recommended intake: 3 cups daily (80–110 mg polyphenols, 50–100 mg caffeine per cup).

Turmeric

Turmeric, a warm, slightly bitter spice related to ginger, is a key ingredient in curry powder. It contains curcumin, a potent anti-inflammatory compound. Studies in RA patients found curcumin reduced morning stiffness, improved walking time, and decreased joint swelling. Turmeric or curry powder is excellent for flavoring lentils and cauliflower.

Ginger

Ginger contains strong anti-inflammatory compounds called gingerols. In studies, 75% of arthritis patients reported reduced pain or swelling after consuming ginger. It is rich in magnesium, vitamin B6, potassium, manganese, and copper. Can be used as a spice for vegetables, poultry, or fish. Warm ginger compresses are useful for pain relief in arthritis and gout.

Foods That May Worsen Rheumatoid Arthritis

Elimination diets in the 1990s showed that avoiding certain foods can reduce symptoms:

• Corn and wheat → over 50% of participants

• Bacon, milk, citrus → 40%

• Rye, oats, eggs, red meat → 30%

• Tomatoes → 20%

Evidence Supporting the Mediterranean Diet

A study in the American Journal of Clinical Nutrition showed that people who ate red meat daily had twice the risk of developing RA compared to those eating red meat twice a week.

Recipes

Salmon (or Mackerel, Tuna) – serves 2

• 450 g salmon fillet, cut into 2 pieces

• 2 tbsp lemon juice

• 2 tbsp extra virgin olive oil

• 1 medium garlic clove, minced or pressed

• Salt and black pepper

• Fresh rosemary

Rub lemon juice, salt, and pepper into the fillets. Pan-fry 7–10 minutes per side. Drizzle with olive oil, garlic, and rosemary. Optional: mint, coriander, or ginger. Serve with a green salad for a light meal.

Raspberry and Almond Parfait – serves 2

• 200 g light yogurt

• 1 tbsp honey

• 190 g raspberries

• 10 g sliced almonds

• 5 g grated dark chocolate (80% cocoa)

Blend yogurt and honey. Divide into bowls, layer with raspberries and almonds. Optionally, sprinkle with dark chocolate.