Wild salmon is one of the richest dietary sources of EPA and DHA — the two omega-3 fatty acids with the strongest direct anti-inflammatory action. EPA in particular inhibits the production of arachidonic acid, a fatty acid the body uses to manufacture pro-inflammatory compounds. The NPF recommends cold-water fatty fish at least twice a week.²

Sardines and mackerel are smaller, oilier fish with even higher omega-3 concentrations than salmon per gram. They're also lower in mercury — relevant for people eating fish multiple times a week. Herring and trout are in the same category. The variety within this group matters less than the consistency of eating them.

Walnuts are the best plant-based source of ALA — alpha-linolenic acid, the omega-3 that the body partially converts to EPA and DHA. While the conversion rate is modest, walnuts also contribute vitamin E and polyphenols with independent antioxidant properties. They're the most practical omega-3 nut for daily use.

Both are high in ALA and dietary fiber — a useful combination for psoriasis, since fiber also feeds beneficial gut bacteria. Flaxseeds need to be ground to release their nutrients; whole flaxseeds pass through undigested. Chia seeds can be used whole and absorb liquid to form a gel that supports satiety and digestion.

Blueberries have one of the highest antioxidant concentrations of any common fruit, driven by their anthocyanin content — the pigments that give them their color. Anthocyanins have demonstrated anti-inflammatory effects in research, inhibiting some of the same cytokine pathways involved in psoriasis. Frozen blueberries retain their antioxidant content and are a more affordable everyday option.

Dark leafy greens are dense in vitamins A, C, and K — all relevant to skin cell function and immune regulation. Vitamin A supports healthy skin cell turnover; vitamin C is essential for collagen synthesis and has antioxidant properties; vitamin K plays a role in reducing vascular inflammation. They're also high in folate and magnesium, both of which support cellular repair.

Red and yellow bell peppers contain more vitamin C per gram than oranges — a fact most people don't know. Vitamin C is a primary water-soluble antioxidant, and psoriatic skin has been shown to have depleted antioxidant capacity compared to healthy skin. Bell peppers are also rich in quercetin, a flavonoid with anti-inflammatory properties.

Green tea contains EGCG (epigallocatechin gallate), a catechin with well-documented anti-inflammatory and antioxidant effects. Some research suggests EGCG may inhibit certain immune pathways involved in autoimmune skin conditions. It's also a practical substitute for sugary drinks — which means replacing two sodas a day with green tea has a double benefit.

Oats are high in beta-glucan, a soluble fiber that feeds beneficial gut bacteria (Lactobacillus and Bifidobacterium species) and has independent immune-modulating properties. They're also low on the glycemic index, meaning they don't cause the blood sugar spikes that stimulate inflammatory cytokine production. Choose plain rolled or steel-cut oats rather than flavored instant versions, which can be high in added sugar.

Legumes are among the highest-fiber whole foods available, and they're also rich in plant-based protein, folate, and zinc — a mineral that plays a role in skin repair and immune function. Their fiber content feeds the gut bacteria that produce short-chain fatty acids, compounds with anti-inflammatory effects throughout the body including the skin.

Fermented foods introduce live beneficial bacteria directly into the gut. Plain yogurt and kefir are the most accessible options; kimchi and sauerkraut add variety and are also high in vitamin C. The key is choosing unsweetened versions — sugar in flavored yogurts feeds harmful bacteria, partially offsetting the probiotic benefit.

Garlic and onions are prebiotic foods — they contain fructooligosaccharides that selectively feed beneficial gut bacteria. Garlic also contains allicin, a sulfur compound with anti-inflammatory and antimicrobial properties. They're not superfoods in isolation, but they're easy to include in cooking daily and their cumulative effect on gut health is meaningful.

Olive oil is the central fat of the Mediterranean diet — the dietary pattern with the strongest evidence base for psoriasis management.¹ Its primary anti-inflammatory compound, oleocanthal, inhibits the same inflammatory enzyme pathways as ibuprofen, though at lower intensity. It's also rich in polyphenols that protect against oxidative stress. The key is extra virgin — refined olive oil loses most of these compounds in processing.

Turmeric's active compound, curcumin, has been extensively studied for its anti-inflammatory effects — it inhibits NF-κB, a protein complex that plays a central role in the inflammatory signaling involved in psoriasis. The practical limitation is bioavailability: curcumin absorbs poorly on its own. Combining turmeric with black pepper (which contains piperine) increases absorption significantly. Cooking turmeric in fat also improves uptake.

Avocado is high in monounsaturated fats — the same class as olive oil — and also contains vitamins E and C, both antioxidants relevant to skin health. Vitamin E in particular is a fat-soluble antioxidant that concentrates in skin tissue and helps protect against oxidative damage. Avocado also contributes potassium and fiber, supporting overall metabolic health.