Patient nutrition guide · For Patients with Psoriatic Arthritis

5 Complete Mediterranean Meals

Anti-Inflammatory Diet for PsA. By A. Papachristos.

The Mediterranean diet has the strongest evidence base of any dietary pattern for reducing systemic inflammation in psoriatic arthritis. Multiple clinical trials have demonstrated that adherence to a Mediterranean diet is associated with lower disease activity scores (DAPSA), reduced skin plaque severity (PASI), decreased CRP and ESR levels, and improved cardiovascular risk profiles, a critical consideration given the elevated cardiovascular morbidity associated with PsA. These five complete meals reflect the core principles of the traditional Mediterranean dietary pattern: abundant olive oil, fish, legumes, whole grains, vegetables, and fresh herbs.

Each recipe includes a full ingredient list, step-by-step instructions, a detailed explanation of its anti-inflammatory mechanisms specific to PsA, a nutritional summary, and practical tips adapted for patients experiencing joint stiffness or enthesitis.

1

Herb-Crusted Baked Salmon with Lemon-Olive Oil Potatoes & Greek Salad

35 minutes | 2 servings | Easy | ~520 kcal per serving

This quintessential Mediterranean plate pairs omega-3-rich salmon with a traditional Greek salad and lemon-roasted potatoes. Wild salmon is one of the most evidence-based anti-inflammatory foods available, providing EPA and DHA at doses shown to reduce both joint inflammation and skin plaque severity in psoriatic arthritis. The extra-virgin olive oil used throughout the dish provides oleocanthal, a compound with pharmacological similarities to ibuprofen.

Why it helps: Salmon provides 2 to 3 g of EPA and DHA per serving, which directly inhibit the production of prostaglandin E2, leukotriene B4, and TNF-α, all central mediators in PsA pathogenesis. Studies have shown that higher omega-3 intake is associated with reduced enthesitis scores and lower PASI in PsA patients. Oleocanthal from the olive oil inhibits both COX-1 and COX-2 at pharmacologically relevant concentrations. The raw tomatoes, cucumber, and red onion in the Greek salad provide quercetin, lycopene, and sulphur compounds that further modulate the NF-κB pathway.

Ingredients

  • 2 salmon fillets (approx. 170 g each, skin-on)
  • 2 tbsp extra-virgin olive oil, divided
  • 1 tbsp fresh lemon juice
  • 2 cloves garlic, minced
  • 1 tsp dried oregano
  • ½ tsp dried thyme
  • 400 g baby potatoes, halved
  • Zest of 1 lemon

For the Greek salad:

  • 2 large tomatoes, chopped
  • 1 cucumber, diced
  • ¼ red onion, thinly sliced
  • ¼ cup Kalamata olives
  • 50 g feta cheese, crumbled
  • 1 tbsp extra-virgin olive oil
  • 1 tsp red wine vinegar
  • ½ tsp dried oregano

Method

  1. Preheat the oven to 200°C (400°F). Toss the halved baby potatoes with 1 tablespoon of olive oil, lemon zest, a pinch of salt, and pepper. Spread on a lined baking tray and roast for 15 minutes.
  2. While potatoes begin roasting, combine the remaining olive oil, lemon juice, minced garlic, oregano, and thyme in a small bowl to create the herb crust.
  3. After the potatoes have roasted for 15 minutes, push them to one side of the tray. Place the salmon fillets on the other side, skin-side down. Spoon the herb mixture evenly over the top of each fillet.
  4. Return the tray to the oven and roast for a further 12 to 15 minutes until the salmon is cooked through and flakes easily with a fork, and the potatoes are golden and tender.
  5. While the salmon and potatoes finish cooking, prepare the Greek salad: combine the tomatoes, cucumber, red onion, and olives in a bowl. Drizzle with olive oil and red wine vinegar. Add the oregano, season lightly, and toss. Top with crumbled feta.
  6. Plate the salmon alongside the lemon-olive oil potatoes and serve the Greek salad on the side. Finish with a squeeze of fresh lemon.

Tip. Purchase pre-portioned salmon fillets to eliminate the need to cut through a whole fillet. If hand stiffness is an issue, use a fork to flake the herb crust mixture onto the fish rather than spreading by hand. Frozen wild salmon is equally nutritious and often more affordable than fresh.

Nutrition (per serving). Protein: 38 g | Omega-3 (EPA+DHA): 2.4 g | Fibre: 5 g | Vitamin D: 14 µg (56% DV) | Selenium: 42 µg

2

Slow-Simmered Tuscan White Bean & Kale Stew

30 minutes | 4 servings | Very Easy, One Pot | ~370 kcal per serving

This hearty Tuscan stew is a cornerstone of the Italian Mediterranean tradition, built on cannellini beans, dark leafy greens, and generous quantities of extra-virgin olive oil. The one-pot method makes it ideal for batch cooking on days when PsA symptoms are manageable, producing four servings that store and reheat exceptionally well. The dish provides complete nutrition with plant-based protein, complex carbohydrates, and anti-inflammatory fats in a single bowl.

Why it helps: Cannellini beans provide saponins and phenolic acids that reduce circulating CRP and IL-6 levels. Kale is among the most nutrient-dense foods available, delivering sulforaphane (an isothiocyanate that activates the Nrf2 antioxidant pathway), vitamin K (essential for bone health in PsA patients at risk of erosive disease), and kaempferol (a flavonoid that inhibits IL-1β production). Rosemary contains carnosic acid and rosmarinic acid, both of which suppress NF-κB activation. The stew’s generous olive oil content ensures optimal absorption of fat-soluble phytonutrients.

Ingredients

  • 2 cans (400 g each) cannellini beans, drained and rinsed
  • 1 large bunch kale (approx. 200 g), stems removed, leaves roughly torn
  • 3 tbsp extra-virgin olive oil
  • 1 medium onion, diced
  • 4 cloves garlic, sliced
  • 1 can (400 g) diced tomatoes
  • 3 cups vegetable broth
  • 1 sprig fresh rosemary (or 1 tsp dried)
  • 1 tsp smoked paprika
  • ½ tsp red pepper flakes (optional; omit if nightshades aggravate symptoms)
  • Juice of ½ lemon
  • Salt and black pepper to taste
  • Crusty wholegrain bread for serving

Method

  1. Heat the olive oil in a large pot or Dutch oven over medium heat. Add the diced onion and cook for 3 to 4 minutes until softened. Add the sliced garlic and cook for 1 minute more.
  2. Add the smoked paprika, rosemary, and red pepper flakes (if using). Stir for 30 seconds until fragrant.
  3. Add the diced tomatoes, vegetable broth, and drained cannellini beans. Stir to combine. Bring to a gentle boil.
  4. Reduce the heat to low and simmer uncovered for 15 minutes, stirring occasionally. Using the back of a wooden spoon, lightly crush about one-third of the beans against the side of the pot to thicken the stew naturally.
  5. Add the torn kale leaves. Stir and cook for 4 to 5 minutes until the kale is wilted and tender but still bright green.
  6. Remove from heat. Stir in the lemon juice and season with salt and pepper. Ladle into bowls, finish with an extra drizzle of olive oil, and serve with crusty bread.

Tip. This stew improves in flavour overnight and stores in the refrigerator for up to 5 days or freezer for 3 months. For PsA patients who find that nightshade vegetables (tomatoes, peppers) worsen their skin symptoms, the diced tomatoes can be replaced with an equal volume of vegetable broth plus 1 tablespoon of lemon juice for acidity.

Nutrition (per serving). Protein: 18 g | Fibre: 14 g | Vitamin K: 320 µg (267% DV) | Iron: 6 mg | Folate: 190 µg

3

Grilled Chicken Souvlaki Plate with Tzatziki & Tabbouleh

30 minutes (plus 30 min marinating) | 2 servings | Easy | ~490 kcal per serving

This classic Greek souvlaki plate combines marinated grilled chicken with cool tzatziki and fresh tabbouleh. The yoghurt-based tzatziki provides probiotic cultures that support the gut-skin axis, an increasingly recognised pathway in psoriatic disease. The parsley-heavy tabbouleh delivers exceptional vitamin C and apigenin content, while the lemon-oregano-olive oil marinade infuses the chicken with Mediterranean phytochemicals.

Why it helps: The yoghurt in tzatziki provides Lactobacillus and Streptococcus thermophilus strains that modulate gut-associated lymphoid tissue, which is particularly relevant in PsA given the established gut-skin-joint axis. Emerging research links gut dysbiosis to both psoriasis severity and enthesitis in PsA. Parsley provides apigenin, one of the most potent natural COX-2 inhibitors, at concentrations relevant to dietary intake. Bulgur wheat provides prebiotic fibre that selectively feeds Faecalibacterium prausnitzii, a butyrate-producing species depleted in psoriatic disease.

Ingredients

  • 300 g boneless, skinless chicken thighs, cut into 2 cm cubes
  • 2 tbsp extra-virgin olive oil
  • Juice of 1 lemon
  • 2 cloves garlic, minced
  • 1 tsp dried oregano
  • ½ tsp ground cumin

For the tabbouleh:

  • ½ cup fine bulgur wheat
  • 1 large bunch flat-leaf parsley, finely chopped (approx. 1½ cups)
  • 2 tomatoes, finely diced
  • ¼ cucumber, finely diced
  • 3 spring onions, thinly sliced
  • 2 tbsp extra-virgin olive oil
  • Juice of 1 lemon

For the tzatziki:

  • ¾ cup plain Greek yoghurt (full-fat, live cultures)
  • ½ cucumber, grated and squeezed dry
  • 1 clove garlic, finely grated
  • 1 tbsp extra-virgin olive oil
  • 1 tsp lemon juice
  • 1 tbsp fresh mint or dill, chopped

Method

  1. Combine the olive oil, lemon juice, garlic, oregano, and cumin in a bowl. Add the chicken cubes and toss to coat. Cover and marinate in the refrigerator for at least 30 minutes (up to 4 hours).
  2. Prepare the tabbouleh: place the bulgur in a bowl, cover with boiling water, and let stand for 15 minutes until tender. Drain any excess water. Fluff with a fork and allow to cool. Toss with the chopped parsley, tomatoes, cucumber, spring onions, olive oil, and lemon juice. Season with salt.
  3. Prepare the tzatziki: combine the Greek yoghurt, grated cucumber, garlic, olive oil, lemon juice, and chopped mint or dill. Stir well and refrigerate until serving.
  4. Thread the marinated chicken onto skewers (if using) or simply cook loose in a hot grill pan or skillet over medium-high heat for 3 to 4 minutes per side until golden and cooked through (internal temperature 74°C / 165°F).
  5. Let the chicken rest for 2 minutes after cooking. This redistributes the juices and makes the meat more tender.
  6. Assemble the plate: arrange the grilled chicken, a generous portion of tabbouleh, and a dollop of tzatziki. Serve with warm wholegrain pitta bread and lemon wedges.

Tip. If grip strength is limited, skip the skewers and cook the chicken pieces loose in the pan. Pre-made tzatziki from the grocery store is a perfectly acceptable time-saving substitute. The tabbouleh and tzatziki can both be prepared the day before and stored in the refrigerator, leaving only the chicken to cook at mealtime.

Nutrition (per serving). Protein: 36 g | Fibre: 8 g | Vitamin C: 85 mg (94% DV) | Probiotics: live cultures from yoghurt | Zinc: 4.2 mg

4

Baked Sardines with Roasted Red Pepper Romesco & Herbed Couscous

30 minutes | 2 servings | Easy | ~470 kcal per serving

Sardines are one of the most underappreciated superfoods in the Mediterranean diet. They provide among the highest omega-3 concentrations of any commonly available fish, along with vitamin D (critical for immune regulation in PsA) and calcium from the edible bones. Paired with a Spanish-inspired romesco sauce rich in almonds and roasted red peppers, and a bed of herbed whole wheat couscous, this meal delivers exceptional anti-inflammatory nutrient density at a very low cost.

Why it helps: Sardines provide 1.5 to 2 g of EPA and DHA per serving plus 4.8 µg of vitamin D, which is relevant because vitamin D deficiency is significantly more prevalent in PsA patients and correlates with disease activity. Almonds in the romesco provide vitamin E (α-tocopherol), which reduces oxidative damage to skin keratinocytes in psoriasis. Roasted red peppers provide capsanthin and vitamin C. Whole wheat couscous provides selenium and prebiotic fibre. The combination addresses multiple inflammatory pathways simultaneously: omega-3s (prostaglandin pathway), vitamin D (T-cell regulation), vitamin E (oxidative stress), and fibre (gut-skin axis).

Ingredients

  • 8 whole sardines, cleaned and gutted (or 2 cans, drained)
  • 2 tbsp extra-virgin olive oil, divided
  • Juice of ½ lemon
  • 2 cloves garlic, sliced
  • Salt and pepper

For the romesco sauce:

  • 1 jar (200 g) roasted red peppers, drained
  • ¼ cup blanched almonds
  • 1 clove garlic
  • 1 tbsp extra-virgin olive oil
  • 1 tbsp sherry vinegar or red wine vinegar
  • ½ tsp smoked paprika

For the herbed couscous:

  • 1 cup whole wheat couscous
  • 1¼ cups boiling vegetable broth
  • 2 tbsp fresh parsley, chopped
  • 1 tbsp fresh mint, chopped
  • Zest of ½ lemon
  • 1 tbsp extra-virgin olive oil

Method

  1. Preheat the oven to 200°C (400°F). Lay the sardines on a lined baking tray. Drizzle with 1 tablespoon of olive oil and the lemon juice. Scatter the sliced garlic over the fish and season with salt and pepper.
  2. Bake the sardines for 12 to 15 minutes until the flesh is opaque and the skin is lightly crisped. If using canned sardines, simply warm them in the oven for 5 minutes.
  3. While the sardines bake, prepare the romesco: blend the roasted red peppers, almonds, garlic, olive oil, vinegar, and smoked paprika in a blender or food processor until you have a slightly chunky sauce. Season with salt.
  4. Prepare the couscous: place the couscous in a heatproof bowl and pour the boiling vegetable broth over it. Cover tightly with a plate or cling film and let stand for 5 minutes. Fluff with a fork, then stir in the parsley, mint, lemon zest, and olive oil.
  5. Spoon a generous bed of herbed couscous onto each plate. Arrange the baked sardines on top.
  6. Drizzle the romesco sauce over and around the sardines. Serve with lemon wedges and extra olive oil at the table.

Tip. Canned sardines in olive oil are a perfectly valid and much easier alternative to fresh sardines, with comparable omega-3 and vitamin D content. They require no preparation beyond opening the can. For patients who dislike sardines, mackerel or trout are excellent omega-3 alternatives that work well with the same romesco sauce.

Nutrition (per serving). Protein: 34 g | Omega-3 (EPA+DHA): 2.1 g | Vitamin D: 4.8 µg (32% DV) | Calcium: 380 mg | Vitamin E: 7 mg

5

Spiced Lamb Kofta with Hummus, Roasted Vegetables & Pomegranate

35 minutes | 2 servings | Easy | ~510 kcal per serving

This Eastern Mediterranean plate brings together spiced lamb kofta with creamy hummus, roasted vegetables, and a pomegranate garnish. While red meat is often cautioned against in inflammatory conditions, lean lamb in moderate portions (as consumed in the traditional Mediterranean diet) provides highly bioavailable zinc, iron, and B12, nutrients commonly depleted in PsA patients on immunosuppressive therapy. The key is portion control and the anti-inflammatory context of the accompanying foods. Weekly Mediterranean Meal Plan for PsA The following sample week incorporates all five meals with simple Mediterranean-style breakfast and snack suggestions. Adjust based on your appetite, symptom levels, and personal preferences.

Why it helps: Pomegranate is one of the richest dietary sources of punicalagins and ellagic acid, which gut bacteria convert to urolithin A, a compound with demonstrated anti-inflammatory and skin-protective properties specifically studied in psoriasis models. Chickpeas in the hummus provide butyrogenic fibre and saponins. The tahini in hummus provides sesamin, a lignan that inhibits Δ-5 desaturase (reducing arachidonic acid synthesis). Cumin and coriander in the kofta contain cuminaldehyde and linalool, both NF-κB inhibitors. The roasted aubergine provides nasunin, a potent anthocyanin antioxidant unique to the skin of this vegetable.

Ingredients

  • 250 g lean lamb mince
  • 1 tsp ground cumin
  • 1 tsp ground coriander
  • ½ tsp ground cinnamon
  • 2 cloves garlic, finely grated
  • 2 tbsp fresh parsley, finely chopped
  • Salt and pepper
  • 1 medium aubergine (eggplant), cut into 2 cm cubes
  • 1 medium courgette (zucchini), cut into half-moons
  • 1 red onion, cut into wedges
  • 3 tbsp extra-virgin olive oil, divided
  • For serving:
  • ½ cup prepared hummus (shop-bought is fine)
  • 2 tbsp pomegranate seeds
  • Fresh mint and parsley for garnish
  • Wholegrain flatbread or pitta
  • Lemon wedges

Method

  1. Preheat the oven to 210°C (410°F). Toss the aubergine, courgette, and red onion with 2 tablespoons of olive oil, a pinch of salt, and pepper. Spread on a lined baking tray in a single layer. Roast for 25 minutes, turning once halfway, until tender and lightly charred.
  2. While vegetables roast, prepare the kofta: combine the lamb mince, cumin, coriander, cinnamon, garlic, parsley, salt, and pepper in a bowl. Mix gently until just combined (do not overwork). Form into 6 small oval patties or log shapes.
  3. Heat the remaining 1 tablespoon of olive oil in a skillet over medium-high heat. Cook the kofta for 3 to 4 minutes per side until browned on the outside and cooked through.
  4. Let the kofta rest for 2 minutes after cooking.
  5. Assemble the plates: spread a generous layer of hummus on each plate. Arrange the roasted vegetables and kofta on top of or alongside the hummus.
  6. Scatter pomegranate seeds over the plate. Garnish with fresh mint and parsley. Serve with warm flatbread, lemon wedges, and extra olive oil.

Tip. If forming the kofta by hand is difficult due to joint stiffness, use a spoon to shape rough portions directly into the pan, they do not need to be perfectly formed. Pre-made hummus and pre-cut frozen vegetables significantly reduce preparation effort. Pomegranate seeds (arils) are available pre-packaged in most grocery stores, eliminating the need to cut and de-seed a whole fruit.

Nutrition (per serving). Protein: 32 g | Fibre: 10 g | Zinc: 5.8 mg (53% DV) | Iron: 4.2 mg | Vitamin B12: 2.4 µg

DayBreakfast / SnackMain MealPsA Note
MonGreek yoghurt with walnuts, honey, and pomegranate seedsMeal 1: Herb-Crusted Salmon PlateOmega-3 day; supports skin and joint targets
TueWholegrain toast with olive oil, tomato, and oreganoMeal 2: Tuscan White Bean & Kale StewBatch cook 4 servings; high vitamin K
WedSmoothie: banana, spinach, flaxseed, almond milkMeal 3: Chicken Souvlaki PlateProbiotic tzatziki supports gut-skin axis
ThuOats with cinnamon, walnuts, and sliced figsMeal 2: Bean Stew (leftover)Zero prep; add fresh lemon before serving
FriApple with almond butter and ground turmericMeal 4: Baked Sardines with RomescoHighest omega-3 + vitamin D combination
SatLabneh with cucumber, mint, and olive oil on pittaMeal 5: Lamb Kofta with HummusZinc and iron for immune support
SunShakshuka (eggs poached in tomato-pepper sauce)Meal 1: Salmon Plate (variation)Try with different roasted vegetables
NutrientKey Sources in These MealsAnti-Inflammatory ActionPsA-Specific Relevance
Omega-3 (EPA/DHA)Salmon, sardines, walnutsInhibits PGE2 and LTB4 synthesisReduces enthesitis scores and PASI; lowers cardiovascular risk in PsA
Vitamin DSardines, salmon, fortified yoghurtT-cell regulation; dendritic cell modulationDeficiency correlates with higher DAPSA; supplementation may improve skin outcomes
OleocanthalExtra-virgin olive oil (used in all 5 meals)COX-1/COX-2 dual inhibitionMay reduce NSAID requirement with consistent daily intake of 3 to 4 tbsp EVOO
PolyphenolsPomegranate, olives, parsley, rosemaryNF-κB suppression; Nrf2 activationUrolithin A from pomegranate shows specific keratinocyte-protective effects in psoriasis models
Prebiotic FibreBeans, bulgur, whole wheat couscous, kaleFeeds SCFA-producing gut bacteriaSupports gut-skin axis; F. prausnitzii depletion is linked to psoriasis severity
ZincLamb, chickpeas, pumpkin seedsImmune cell differentiation; wound healingOften depleted by methotrexate; critical for skin barrier repair in psoriatic lesions
A Note on Nightshade Vegetables. Some PsA patients report that nightshade vegetables (tomatoes, peppers, aubergine, potatoes) worsen their skin or joint symptoms. While there is limited controlled evidence for this association, individual responses vary. If you suspect nightshades are a trigger, try eliminating them for 3 to 4 weeks and then reintroducing them one at a time while monitoring symptoms. Several of these recipes include nightshades but can be adapted: substitute tomatoes with extra broth and lemon juice for acidity, replace peppers with courgette or fennel, and swap aubergine for mushrooms or artichoke hearts.
Important Note. These recipes are intended to complement, not replace, your prescribed medical treatment for psoriatic arthritis. Dietary changes can support overall health and may help reduce systemic inflammation, but they should be discussed with your rheumatologist or dietitian. This is particularly important if you are on methotrexate (ensure adequate folate intake), biologics, or other immunosuppressive medications, or if you have comorbidities such as metabolic syndrome, which is more prevalent in PsA. Alcohol is excluded from these recipes as it interacts with methotrexate and may worsen psoriatic skin disease.
This is general information, not medical advice. These recipes support a healthy anti-inflammatory eating pattern; they do not replace advice from your own clinician or a dietitian.