Diet for psoriatic arthritis

A Mediterranean-style anti-inflammatory diet supports both the joint and skin components of PsA, and helps maintain a healthy weight.

Foods to favour

  • Oily fish for omega-3s
  • Olive oil, nuts, and seeds
  • Plenty of colourful vegetables and fruit
  • Wholegrains and pulses
  • Adequate vitamin D (a deficiency is common in psoriasis)

Foods to limit

  • Ultra-processed and high-sugar foods
  • Excess alcohol (can worsen psoriasis)
  • Excess red and processed meat
  • Foods that personally trigger your psoriasis flares

This is general information, not a substitute for personalised medical advice.

Frequently asked questions

What is the best diet for psoriatic arthritis?

A Mediterranean-style anti-inflammatory diet is the most evidence-backed eating pattern for psoriatic arthritis. It emphasises vegetables, fruit, wholegrains, pulses, oily fish, olive oil, nuts and seeds, with limited ultra-processed food and sugar.

What foods should I avoid with psa?

Limit ultra-processed foods, sugary drinks, excess alcohol, and large amounts of red or processed meat. Many people also notice individual triggers — a short food diary can help you spot them.

Can diet reduce psoriatic arthritis inflammation?

Yes — an anti-inflammatory eating pattern, combined with maintaining a healthy weight, has been shown to reduce joint pain and inflammatory markers in psoriatic arthritis. Diet works best alongside exercise and any prescribed medication.

Do supplements help with psa?

Evidence is mixed. Omega-3 fish oil, vitamin D (where deficient), and turmeric/curcumin have the most supportive research for psa. Speak to your GP or pharmacist before starting supplements, especially if you take other medication.

Is there a single food that triggers psoriatic arthritis flares?

No single food causes psoriatic arthritis, but ultra-processed foods, excess sugar, and (for gout in particular) high-purine foods and alcohol can worsen symptoms. Focus on overall pattern rather than individual "miracle" or "forbidden" foods.