Foods for Eczema Relief: An Anti-Inflammatory Approach to Itchy Skin

By BiteBrightly 25 August 2026: This post might contain affiliate links.

Eczema — atopic dermatitis in its most common form — affects more than 200 million people worldwide. It is a chronic inflammatory skin condition characterised by a compromised skin barrier, immune dysregulation, and a cyclical pattern of flares and remission. The itching is relentless. The flares are unpredictable. And the relationship between diet and eczema is one of the most frequently asked about — and most frequently misrepresented — areas of nutritional skin health.

The honest starting point: there is no single eczema diet that works for everyone, and no food that cures eczema. A 2018 Cochrane review found that probiotic supplements showed little benefit for treating established eczema. Elimination diets, despite their popularity, show minimal benefit for most people with eczema and carry the risk of developing new food sensitivities. The evidence for single food triggers — beyond confirmed individual allergies — is weak and inconsistent.

What the research does consistently support is a different approach: reducing the systemic inflammation that drives and sustains eczema flares through an anti-inflammatory dietary pattern, supporting the gut-skin axis through diverse fibre and fermented foods, and addressing specific nutritional deficiencies (particularly omega-3 and vitamin D) associated with worsened eczema severity.

This guide covers the anti-inflammatory dietary approach to eczema — the foods with genuine research support, the specific mechanisms behind each one, and the honest evidence that calibrates expectations.

An important note: Eczema is a complex chronic condition. If your eczema is severe, significantly affecting your quality of life, or you suspect food allergies (particularly in children — approximately 30% of children with eczema also have food allergies), please work with a dermatologist and registered dietitian. Dietary changes are a complement to medical treatment, not a substitute. Do not eliminate major food groups without medical supervision.

Key Takeaways

• Eczema is fundamentally an inflammatory condition — the skin barrier is compromised, the immune system is dysregulated, and environmental and dietary factors that increase systemic inflammation worsen flares; reducing dietary pro-inflammatory load is the most evidence-consistent dietary strategy

• A 2024 study found that higher sodium intake was associated with increased eczema severity — with each additional gram of urinary sodium excretion per day associated with an 11% higher likelihood of active eczema

• Omega-3 fatty acids — EPA and DHA from oily fish — reduce the production of inflammatory prostaglandins and leukotrienes that drive eczema inflammation; a 2021 Frontiers in Immunology review confirmed omega-3 fatty acids' anti-inflammatory effects relevant to skin diseases

• The gut-skin axis is well-established in eczema research — dysbiosis (imbalanced gut microbiome) is consistently associated with worsened eczema; this is why dietary fibre diversity, prebiotic foods, and fermented foods support eczema management indirectly through microbiome support

• Quercetin — a flavonoid found in colourful fruits and vegetables — inhibits histamine release from mast cells and has demonstrated anti-allergic and anti-inflammatory activity in research relevant to atopic conditions

• Individual food triggers in eczema are genuinely individual — confirmed by allergy testing rather than blanket elimination; the anti-inflammatory dietary pattern approach (adding beneficial foods rather than eliminating suspected ones) is more evidence-supported than elimination diets for most people without confirmed food allergies

Understanding Eczema — Why Diet Matters at the Inflammatory Level

Before the foods, the mechanism that connects diet to eczema:

The skin barrier dysfunction: In eczema, the skin barrier is structurally compromised — filaggrin gene mutations (common in atopic eczema) result in a leaky skin barrier that allows allergens, irritants, and microbes to penetrate and trigger immune responses. Dietary omega-3 and vitamin E support the lipid composition of the skin barrier.

The immune dysregulation: Eczema involves an overactive Th2 immune response — producing high levels of IL-4, IL-13, and IgE that drive allergic inflammation. Anti-inflammatory dietary compounds (omega-3, polyphenols, quercetin) modulate this immune response.

The gut-skin axis: The gut microbiome regulates systemic immune function — including the Th1/Th2 balance relevant to eczema. People with eczema consistently show different gut microbiome profiles than those without. Dietary fibre and fermented foods support the microbiome diversity that moderates immune regulation.

Systemic inflammation: Pro-inflammatory dietary patterns — high in sodium, refined carbohydrates, trans fats, and ultra-processed foods — increase systemic inflammatory markers (IL-6, TNF-alpha, CRP) that worsen eczema inflammation. Anti-inflammatory dietary patterns measurably reduce these markers.

Food 1: Oily Fish — Omega-3 for Inflammatory Pathway Modulation

Eczema mechanism: EPA and DHA compete with arachidonic acid, reducing production of inflammatory prostaglandins and leukotrienes that drive eczema inflammation Evidence level: Moderate — consistent mechanistic evidence; clinical trial results mixed but directionally positive

Omega-3 fatty acids from oily fish are the most consistently researched dietary intervention for inflammatory skin conditions. EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) compete with arachidonic acid — the omega-6 fatty acid that is the precursor to pro-inflammatory prostaglandin E2 and leukotriene B4, both of which are significantly elevated in eczema lesions. By displacing arachidonic acid in cell membranes, higher EPA and DHA levels reduce the production of these inflammatory signalling molecules.

A 2021 Frontiers in Immunology review confirmed omega-3 fatty acids' anti-inflammatory effects in skin diseases, noting that EPA and DHA modulate NF-κB signalling (a central inflammatory pathway in eczema) and reduce production of the pro-inflammatory cytokines associated with atopic dermatitis.

The honest limitation: clinical trial results for omega-3 supplementation in eczema have been mixed — some show significant benefit, others modest improvement. The mechanism is well-established; the clinical effect size varies between individuals, likely depending on the starting omega-6:omega-3 ratio. People with diets very high in omega-6 (from vegetable oils, processed foods) may show the most pronounced benefit from increasing omega-3.

Best food sources:

• Wild salmon: approximately 2.2g EPA+DHA per 150g serving

• Mackerel: highest omega-3 per gram of common fish

• Sardines: approximately 2g EPA+DHA per tin — also provide vitamin D and calcium

• Anchovies: very high omega-3 density per gram

• Tinned light tuna: lower omega-3 than oily fish but practical for daily use

How to include it: 2–3 servings of oily fish per week — the consistent research recommendation. Sardines on wholegrain toast, salmon with sweet potato, or mackerel with salad are the most nutritionally complete anti-eczema meals.

Food 2: Leafy Greens and Colourful Vegetables — Quercetin, Antioxidants, and Prebiotic Fibre

Eczema mechanism: Quercetin inhibits histamine release from mast cells; antioxidants reduce oxidative stress in inflamed skin; prebiotic fibre supports gut-skin axis Evidence level: Moderate for quercetin anti-allergic effects; good for prebiotic fibre and gut health

Dark leafy greens and colourful vegetables address eczema through three distinct pathways simultaneously. Quercetin — found in highest concentrations in kale, broccoli, spinach, red onion, and apples — has demonstrated ability to inhibit histamine release from mast cells and basophils. Histamine is one of the primary itch-driving molecules in eczema, and quercetin's stabilising effect on mast cells has genuine relevance to eczema symptom management. Test tube research published in Pediatric Allergy, Immunology, and Pulmonology suggested quercetin may benefit inflammatory skin diseases including eczema — though human clinical evidence remains limited.

Antioxidants from vegetables — vitamin C, vitamin E, beta-carotene, and polyphenols — reduce the oxidative stress that is significantly elevated in eczema-affected skin. Oxidative stress amplifies inflammatory signalling and worsens barrier function. The vivid colours of vegetables directly signal their antioxidant content — carotenoids in orange and yellow vegetables, anthocyanins in purple and red vegetables, and chlorophyll compounds in dark green vegetables all provide distinct antioxidant activity.

Prebiotic fibre from vegetables feeds beneficial gut bacteria — supporting the microbiome diversity that moderates immune regulation and the Th1/Th2 balance relevant to eczema. Garlic, onion, leeks, asparagus, and chicory are among the highest prebiotic fibre sources.

Best vegetables for eczema:

• Kale: highest quercetin + calcium + vitamin C + prebiotic fibre

• Spinach: quercetin + magnesium + folate + iron

• Broccoli: quercetin + sulforaphane (anti-inflammatory) + vitamin C + calcium

• Red and yellow peppers: highest vitamin C per serving + carotenoids

• Sweet potato: beta-carotene + vitamin E + potassium + anti-inflammatory

Food 3: Berries — Anthocyanins and Vitamin C for Skin Barrier Repair

Eczema mechanism: Anthocyanins inhibit NF-κB signalling and reduce inflammatory cytokine production; vitamin C is essential for collagen synthesis and skin barrier repair Evidence level: Good for anti-inflammatory effects of anthocyanins; good for vitamin C in skin collagen

Berries are among the most antioxidant-dense foods available — and their specific anti-inflammatory activity through anthocyanin inhibition of NF-κB signalling is directly relevant to eczema. NF-κB is the central transcription factor that regulates the production of inflammatory cytokines (IL-1β, IL-6, TNF-α) in eczema-affected skin. Blueberry anthocyanins specifically have research demonstrating reduced production of several of the cytokines elevated in atopic dermatitis.

Vitamin C from berries (and other fruits) serves a dual role: as an antioxidant reducing oxidative stress in inflamed tissue, and as the essential cofactor for collagen synthesis that repairs the compromised skin barrier. A deficient or inadequate skin barrier allows allergen penetration that perpetuates eczema inflammation — supporting the skin barrier through dietary vitamin C is a practical and evidence-supported strategy.

Quercetin is also present in high concentrations in berries — particularly blueberries, blackberries, and cranberries — providing the mast cell-stabilising anti-histamine activity described in the leafy greens section.

Best berries for eczema:

• Blueberries: highest anthocyanin content + quercetin + vitamin C

• Blackberries: very high anthocyanin + vitamin C + fibre

• Strawberries: highest vitamin C of common berries + quercetin

• Raspberries: ellagic acid (anti-inflammatory) + fibre + vitamin C

How to include: A daily handful of mixed berries — with Greek yogurt at breakfast, in a smoothie, or as a standalone snack. Frozen berries are nutritionally equivalent and significantly more practical for daily use.

Food 4: Fermented Foods — Gut-Skin Axis Support

Eczema mechanism: Probiotic bacteria support gut barrier integrity, reduce LPS leakage, moderate Th1/Th2 immune balance relevant to eczema Evidence level: Moderate — gut dysbiosis consistently associated with eczema; fermented foods evidence more positive than probiotic supplements for established eczema

The gut-skin axis in eczema is one of the most consistently supported areas of eczema research. People with eczema have measurably different gut microbiome compositions — lower diversity, reduced populations of Lactobacillus and Bifidobacterium, and elevated pro-inflammatory species — compared to those without. This dysbiosis drives the systemic inflammation and immune dysregulation that worsens eczema.

The important caveat from the research: while probiotic supplements have shown limited effectiveness for treating established eczema (2018 Cochrane review), whole fermented foods provide a broader range of bacterial strains alongside prebiotic compounds, anti-inflammatory metabolites, and nutrients that supplements do not replicate. The distinction between probiotic supplement research (generally negative for established eczema) and whole fermented food consumption (generally supportive as part of an anti-inflammatory dietary pattern) is important for realistic expectations.

Best fermented foods for eczema:

• Kefir: 10–15 distinct bacterial and yeast strains alongside kefiran — the most comprehensive probiotic fermented dairy food; also provides calcium and complete protein

• Plain yogurt with live cultures: Lactobacillus and Bifidobacterium strains alongside calcium and iodine

• Kimchi: fermented vegetables providing Lactobacillus kimchii alongside prebiotic fibre and anti-inflammatory compounds

• Sauerkraut: fermented cabbage providing diverse lactic acid bacteria and vitamin C

• Miso: fermented soy providing diverse bacteria alongside isoflavones and protein

How to include: A daily serving of at least one fermented food — kefir or yogurt at breakfast, miso in soups and dressings, kimchi or sauerkraut as a condiment with meals.

Food 5: Extra Virgin Olive Oil — Oleocanthal and Gut Microbiome Support

Eczema mechanism: Oleocanthal inhibits COX-1 and COX-2 (same mechanism as ibuprofen — natural anti-inflammatory); 2025 research confirmed EVOO's anti-inflammatory and gut microbiome-supportive effects Evidence level: Good for anti-inflammatory mechanisms; emerging for eczema specifically

Extra virgin olive oil (EVOO) is the most researched single oil for anti-inflammatory effects, and its relevance to eczema extends beyond general inflammation reduction. Oleocanthal — the polyphenol responsible for the peppery throat sensation of high-quality EVOO — inhibits both COX-1 and COX-2 enzymes through the same mechanism as ibuprofen, reducing prostaglandin production that drives skin inflammation. A 2025 study in Biomolecules confirmed that EVOO exerts anti-inflammatory effects and positively modulates gut and saliva microbiota — connecting the cardiovascular and anti-inflammatory research to the gut-skin axis relevant to eczema.

Unlike refined vegetable oils (high in omega-6 linoleic acid that competes with anti-inflammatory omega-3 pathways), EVOO's oleic acid does not drive the omega-6:omega-3 imbalance that worsens eczema-relevant inflammation. Replacing refined vegetable oils with EVOO in cooking is one of the most practical and well-supported dietary shifts for anti-inflammatory eating.

How to use it:

• Use EVOO as the primary cooking oil for low and medium-heat cooking

• Drizzle over salads, roasted vegetables, and grains after cooking

• Use as a dip for wholegrain bread rather than butter for a polyphenol-rich alternative

• Choose cold-pressed, extra virgin — refined olive oil does not contain meaningful oleocanthal

Food 6: Walnuts and Flaxseeds — Plant-Based Omega-3 and Anti-Inflammatory Fibre

Eczema mechanism: ALA omega-3 (partially converts to EPA/DHA) reduces pro-inflammatory fatty acid production; vitamin E in walnuts protects skin cell membranes from oxidative damage Evidence level: Moderate — ALA conversion to EPA/DHA is limited (less than 8%); walnuts' combined omega-3, polyphenol, and vitamin E profile provides broader anti-inflammatory activity

For people who do not eat fish, walnuts and ground flaxseed provide the primary plant-based sources of ALA omega-3. The honest limitation: ALA conversion to the more biologically active EPA and DHA is inefficient — typically less than 8% to EPA and less than 4% to DHA. This means plant-based omega-3 is a meaningful supplement to — but not a complete replacement for — the EPA and DHA from oily fish for eczema management.

However, walnuts provide additional anti-inflammatory value beyond ALA: polyphenols (ellagitannins) that reduce oxidative stress and vitamin E (tocotrienols) that protects skin cell membranes from the lipid peroxidation elevated in eczema. Ground flaxseed provides ALA alongside soluble fibre (prebiotic for gut bacteria) and lignans (anti-inflammatory plant compounds).

How to include:

• A small handful (28g) of walnuts daily — as a snack, in overnight oats, or in salads

• 1–2 tablespoons of ground flaxseed daily in oats, smoothies, or yogurt (ground not whole — whole flaxseeds pass largely undigested)

• Flaxseed oil as a salad dressing alternative — do not heat as ALA is unstable at high temperatures

Food 7: Colourful Fruits — Vitamin C, Quercetin, and Anti-Inflammatory Polyphenols

Eczema mechanism: Vitamin C supports collagen synthesis for skin barrier repair; quercetin inhibits mast cell histamine release; polyphenols reduce systemic inflammatory markers Evidence level: Good for vitamin C in skin health; moderate for quercetin anti-allergic effects

Beyond berries, a broad range of colourful fruits provide the vitamin C, quercetin, and polyphenols most relevant to eczema management. Vitamin C is the essential cofactor for prolyl hydroxylase and lysyl hydroxylase — the enzymes that stabilise the collagen triple helix in skin. A well-structured skin barrier requires adequate collagen synthesis, and consistently adequate dietary vitamin C supports this daily.

Quercetin is highest in apples (particularly the skin), capers, red onion, and citrus fruits — foods that also provide hesperidin and naringenin (flavonoids with additional mast cell-stabilising and anti-inflammatory activity).

Best fruits for eczema beyond berries:

• Apples (skin on): highest quercetin in common fruit + fibre for gut microbiome

• Kiwi: most vitamin C per gram of any fruit + vitamin E

• Citrus (orange, grapefruit): vitamin C + hesperidin (anti-inflammatory) + quercetin

• Mango: beta-carotene + vitamin C + anti-inflammatory polyphenols

• Pomegranate: punicalagin (highly potent anti-inflammatory polyphenol) + vitamin C

How to include: Fresh fruit at every meal — in overnight oats, alongside lunch, or as a snack. The variety of fruits matters as much as the quantity — different polyphenol profiles from different fruits provide different anti-inflammatory mechanisms.

Food 8: Prebiotic Foods — Feeding the Gut Bacteria That Regulate Immune Function

Eczema mechanism: Prebiotic fibre feeds Lactobacillus and Bifidobacterium species that produce short-chain fatty acids (SCFAs) regulating immune function and reducing systemic inflammation Evidence level: Good for gut-skin axis mechanisms; the most practical way to shift gut microbiome toward eczema-protective profile

If fermented foods introduce beneficial bacteria, prebiotic foods provide what those bacteria need to survive and thrive. Short-chain fatty acids (SCFAs) — particularly butyrate — produced by gut bacteria fermenting prebiotic fibre regulate immune function, reduce intestinal permeability (the "leaky gut" associated with worsened eczema), and modulate the Th1/Th2 immune balance relevant to atopic conditions.

Prebiotic foods are often discussed less than probiotic foods in eczema nutrition — but they may be more practically impactful for most people because they feed the microbiome that is already present rather than relying on introduced bacteria to colonise.

Best prebiotic foods for eczema:

• Garlic: highest inulin content of common vegetables — feeds Bifidobacterium specifically

• Onion and leeks: inulin and fructooligosaccharides (FOS) for Lactobacillus and Bifidobacterium

• Asparagus: inulin + quercetin + saponins (anti-inflammatory)

• Oats: beta-glucan — soluble prebiotic fibre that also reduces LDL and supports immune function

• Bananas (slightly underripe): resistant starch — highly fermentable prebiotic that increases butyrate production

• Jerusalem artichoke: highest inulin concentration of any food — start with small amounts to avoid bloating

How to include: Prebiotic foods at every meal — onion and garlic as cooking bases for almost every savoury dish, oats at breakfast, banana as a daily snack. The Mediterranean diet naturally provides abundant prebiotic foods — another reason why this dietary pattern shows most consistent benefit for inflammatory skin conditions.

What to Reduce — Foods That Worsen Eczema

High sodium foods: The 2024 research finding that each additional gram of urinary sodium excretion was associated with an 11% higher likelihood of active eczema is one of the most specific and actionable dietary findings in recent eczema research. Processed foods, canned goods, fast food, and restaurant meals are the primary sources of excess dietary sodium.

Ultra-processed foods: Combine high sodium with refined carbohydrates, industrial seed oils (high omega-6), artificial additives, and preservatives — creating a multi-mechanism pro-inflammatory profile directly relevant to eczema worsening.

Refined vegetable and seed oils: Corn oil, sunflower oil, safflower oil, and soybean oil are very high in omega-6 linoleic acid, which competes with anti-inflammatory omega-3 pathways and is a direct arachidonic acid precursor. Replacing these with EVOO or avocado oil reduces the omega-6:omega-3 ratio that worsens eczema-relevant inflammation.

Added sugar: Promotes dysbiosis (feeding pro-inflammatory gut bacteria over beneficial species), drives systemic inflammation through AGE (advanced glycation end products) production, and worsens the insulin resistance associated with systemic inflammation.

Alcohol: Increases intestinal permeability (leaky gut), disrupts gut microbiome diversity, depletes zinc and B vitamins needed for skin barrier function, and increases systemic inflammatory markers.

The Anti-Eczema Eating Pattern

Rather than individual foods, the most evidence-consistent approach for dietary eczema management is a whole dietary pattern:

Daily:

• 5+ servings of diverse fruits and vegetables (emphasising dark leafy greens, colourful fruits, onion and garlic family)

• A serving of fermented food (kefir, yogurt, kimchi, or miso)

• Ground flaxseed or walnuts

• Extra virgin olive oil as the primary cooking fat

• Adequate hydration (skin hydration reflects systemic hydration status)

Several times weekly:

• 2–3 servings of oily fish

• Legumes as a protein and prebiotic fibre source

• Oats for beta-glucan prebiotic fibre

Minimise:

• Ultra-processed foods

• High-sodium packaged foods

• Refined vegetable oils (corn, sunflower, soybean)

• Added sugar

This pattern closely resembles the Mediterranean diet — which has the most consistent association with reduced systemic inflammation and improved inflammatory skin condition outcomes across research.

Frequently Asked Questions

Should I do an elimination diet for eczema?

For most adults with eczema who do not have confirmed food allergies, elimination diets are not recommended by dermatologists or dietitians as a first-line approach. The evidence for elimination diets improving eczema in people without specific food allergies is weak, and broad elimination carries the risk of developing new food sensitivities from reintroduction. If you suspect specific food triggers, a structured elimination and reintroduction protocol under the supervision of a registered dietitian is the appropriate approach — not self-directed broad elimination.

For children with eczema, the situation is different — approximately 30% of children with eczema also have food allergies, and allergy testing by a paediatric allergist is appropriate where significant flares are occurring. Always involve a healthcare professional in any elimination approach for children.

How long before dietary changes affect eczema?

Anti-inflammatory dietary changes work through mechanisms that take weeks to produce measurable effects — gut microbiome changes require 4–8 weeks of consistent dietary shifts; omega-3 incorporation into cell membranes takes 6–12 weeks of consistent intake. Visible eczema improvement from dietary changes typically requires 8–12 weeks of consistent anti-inflammatory eating. This is a medium-term investment, not an acute intervention. For a deeper look at foods that support the digestive system and gut microbiome alongside this approach see our Gut Health guide at bitebrightly.com.

Is there a connection between eczema and gut health?

Yes — this is one of the most consistently supported areas of eczema research. People with eczema consistently have measurably different gut microbiome compositions, and the gut-skin axis (the bidirectional communication between gut bacteria and skin immune function) is well-established in atopic dermatitis research. This is why diverse fibre intake, fermented foods, and prebiotic foods are relevant to eczema management — they address the gut microbiome that regulates the systemic immune function driving eczema inflammation. For the full anti-inflammatory food guide that underpins this approach see our Anti-Inflammatory Foods guide at bitebrightly.com.

References and Further Reading

1. Medical News Today (June 2025) — Eczema Diet: Foods to eat and avoid Medically reviewed overview confirming omega-3, probiotics, and flavonoids as the most evidence-supported dietary components for eczema.

2. Frontiers in Immunology (2021) — Omega 3 Fatty Acid and Skin Diseases Confirming EPA and DHA anti-inflammatory mechanisms relevant to atopic dermatitis and other inflammatory skin conditions.

3. HarlanMD / Research Summary (October 2025) — Diet and Eczema: 7 Science-Backed Ways to Reduce Flares Confirming the 2024 sodium-eczema association and summarising current evidence for gut-skin axis, probiotics vs probiotic foods, and Mediterranean dietary pattern for eczema.

4. Biomolecules (2025) — Unraveling the Extra Virgin Olive Oil Effect on Inflammation and on Gut and Saliva Microbiota Confirming EVOO's anti-inflammatory effects and positive gut microbiome modulation — directly relevant to the gut-skin axis in eczema.

About the Author

Judith Tsanga is an Applied Biosciences & Biotechnology graduate with an Advanced Level qualification in Food Science, and the founder of BiteBrightly. Her passion for food as medicine began with her own experience: after making targeted dietary changes, she noticed a meaningful improvement in her eyesight — a personal transformation that inspired her mission to share evidence-based nutrition insights that help others eat well and heal boldly. Content on BiteBrightly is for educational purposes and isn't a substitute for advice from your doctor or dietitian.

Follow Judith on Pinterest for daily health tips, recipes, and wellness inspiration.

Important Notice: Eczema is a complex chronic inflammatory condition. This article is for educational purposes only and is not intended as medical advice. I am not a medical doctor or dermatologist. Dietary changes support eczema management as part of a broader approach — they do not cure eczema or replace medical treatment. If your eczema is severe, significantly affecting your quality of life, or you suspect food allergies (particularly in children), please work with a dermatologist and registered dietitian. Do not undertake elimination diets without medical supervision. These statements have not been evaluated by the FDA.

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