Vegan Diets, Psoriasis & Eczema: What Helps, What Needs Managing & What to Watch For
A vegan diet has genuine potential to reduce the inflammatory load relevant to psoriasis and eczema — and a poorly planned one has specific and well-documented risks of creating the exact nutrient deficiencies that worsen both conditions. The answer to "can going vegan help my skin?" is genuinely "it depends on how you do it" — and understanding what the "how" determines makes this a more useful question.
Vegan Diets, Psoriasis & Eczema: Can Going Vegan Help Your Skin?
Vegan diets have become hugely popular in recent years — not just for ethical or environmental reasons, but also because many people believe plant-based eating may help inflammation and overall health.
And because both psoriasis and eczema are inflammatory skin conditions, many people wonder whether removing animal products could improve flare-ups, itching or dry skin.
Some people report major skin improvements after switching to a vegan diet, while others notice little change — or even worsening symptoms if the diet becomes restrictive or nutritionally unbalanced.
That’s because psoriasis and eczema are complex conditions influenced by:
Genetics
Immune function
Skin barrier health
Stress
Environment
Nutrition
rather than one single food group alone.
Vegan diets may help some people support overall inflammatory health, but results vary significantly between individuals.
Why Vegan Diets Are Linked To Skin Health
Plant-based diets are often rich in:
Fibre
Antioxidants
Polyphenols
Fruits and vegetables
Legumes
Healthy plant fats
Researchers believe these nutrients may help support:
Gut health
Inflammation balance
Metabolic health
Immune function
all of which may influence inflammatory skin conditions like psoriasis and eczema.
Vegan diets are often discussed because they may support broader anti-inflammatory lifestyle habits.
What a well-planned plant-based diet does for psoriasis and eczema
A whole-food plant-based diet — built around vegetables, legumes, whole grains, fruits, nuts, and seeds — has several specific advantages for inflammatory skin conditions:
No arachidonic acid from animal products. Arachidonic acid (AA) — an omega-6 fatty acid found in meat, poultry, and dairy — is the primary substrate for the COX and LOX enzymes that produce inflammatory leukotrienes and prostaglandins. As covered in the omega-3 and eczema article, EPA from fish oil competes with AA at these enzymes. A plant-based diet eliminates the primary dietary AA source, reducing the inflammatory eicosanoid substrate available. This is a specific and mechanistically significant advantage.
Higher polyphenol density. Diets built around diverse vegetables, fruits, legumes, and whole grains naturally provide higher anthocyanin, flavonoid, and quercetin intake — all of which inhibit NF-κB inflammatory signalling. The NF-κB connection runs through the anti-inflammatory diet article.
Higher prebiotic fibre. As covered in the fibre and eczema article, adequate fermentable fibre supports butyrate-producing bacteria that reduce Th2 immune overactivity relevant to eczema. Plant-based diets naturally provide significantly more dietary fibre than omnivorous diets on average.
Reduced ultra-processed food (if well-planned). A whole-food plant-based diet displaces ultra-processed foods — which as covered in the psoriasis processed foods article carry their own inflammatory mechanisms through emulsifiers, refined sugars, and trans fats.
The Gut-Skin Connection
One reason vegan diets receive so much attention in skin health is because plant-based eating is often high in fibre.
Fibre helps feed beneficial gut bacteria, which produce compounds called short-chain fatty acids (SCFAs) linked to:
Immune regulation
Inflammation balance
Gut barrier support
Researchers increasingly believe the gut microbiome may influence inflammatory skin conditions through the “gut-skin axis.”
Gut health is becoming a major focus in eczema and psoriasis research.
The specific nutritional risks: what goes wrong with poorly planned vegan diets
This is the part most vegan diet articles for skin conditions under-address, and it matters significantly.
Vitamin B12 — the most critical deficiency. B12 is found almost exclusively in animal products. Vegans who do not supplement B12 reliably become deficient within months to years. B12 deficiency affects keratinocyte function and skin cell renewal, contributes to elevated homocysteine (which has pro-inflammatory effects), and produces neurological symptoms including fatigue — which overlaps unhelpfully with the fatigue already documented in psoriasis through the sickness behaviour mechanism. Every vegan needs a reliable B12 supplement.
Zinc — higher requirement and lower absorption. Plant foods contain phytic acid (in legumes, grains, and seeds) which binds zinc and reduces its absorption. Vegan diets provide zinc primarily from these phytic acid-containing sources. As covered throughout this series, zinc is one of the most consistently documented nutrients for eczema and acne — through 5-alpha-reductase inhibition, antibacterial activity against S. aureus, and barrier repair support. Vegan individuals typically need approximately 50% more dietary zinc than omnivores to achieve equivalent serum levels due to reduced bioavailability.
Omega-3 EPA and DHA — the ALA conversion problem. As covered in the omega-3 eczema article, plant sources provide only ALA which converts to EPA at 5–10% efficiency. For the eicosanoid competition mechanism that makes omega-3 specifically valuable for eczema and psoriasis, ALA from flaxseed and walnuts is substantially less effective than direct EPA/DHA. Algae-based omega-3 supplements (which are how fish accumulate EPA in the first place) provide direct EPA and DHA without animal products and are the appropriate solution.
Vitamin D — already a problem in the UK. As covered across the eczema and psoriasis vitamin D articles, most UK adults are vitamin D deficient for much of the year regardless of diet, because there are almost no significant dietary sources. Vegans cannot use cod liver oil or oily fish to compensate. Vitamin D3 supplement from lichen-derived sources is the appropriate vegan option.
Iron — non-haem iron from plants has lower bioavailability than haem iron from meat. While iron-deficiency anaemia has complex relationships with skin conditions, adequate iron is relevant to keratinocyte energy metabolism.
Vegan junk food: the important caveat
Being vegan doesn't mean being whole-food plant-based. Heavily processed vegan foods — vegan sausages, plant-based burgers, vegan biscuits and snacks — are frequently NOVA Group 4 ultra-processed foods with the same emulsifier, refined starch, and sugar content as their non-vegan equivalents.
A diet of vegan ready meals and processed snacks does not provide the anti-inflammatory benefits of a well-planned plant-based diet. The principles from the ultra-processed foods article apply regardless of whether the food contains animal products.
Why Weight & Metabolic Health Matter
Researchers increasingly link psoriasis to:
Obesity
Metabolic syndrome
Insulin resistance
Chronic inflammation
Some people find plant-based eating helps support:
Weight management
Blood sugar balance
Fibre intake
which may indirectly support psoriasis management.
Overall metabolic health appears closely connected to inflammatory skin conditions.
The practical position
A well-planned whole-food plant-based diet with appropriate supplementation is one of the more anti-inflammatory dietary approaches available for psoriasis and eczema — removing arachidonic acid, increasing fibre and polyphenols, reducing ultra-processed food. An unplanned plant-based diet that creates B12, zinc, EPA/DHA, and vitamin D deficiencies is actively harmful for both conditions, as these are among the nutrients with the most specific documented roles in eczema and psoriasis management.
The difference between the two is primarily supplementation and food quality — not veganism itself.
Supplementation priorities for vegans with psoriasis or eczema
Given the above, vegans with psoriasis or eczema should specifically ensure:
B12 — daily supplement, cyanocobalamin or methylcobalamin. Non-negotiable.
Algae-based omega-3 EPA/DHA — direct long-chain omega-3 rather than ALA-only. Approximately 1,000–2,000mg combined EPA/DHA.
Vitamin D3 — lichen-derived vegan D3. As discussed across this series, 1,000–2,000 IU daily for maintenance, higher for correction.
Zinc — from a supplement with bioavailable forms (zinc citrate, zinc gluconate) to address the dietary bioavailability deficit. 15–25mg elemental zinc.
The Drought Skin Support Formula is suitable for vegetarians — not certified vegan (manufacturing on shared equipment), but does not contain animal-derived ingredients in the formula itself.
Drought's Skin Support Formula provides vitamin D, zinc, vitamin C, magnesium, and 10 other nutrients specifically relevant to psoriasis and eczema management — addressing several of the nutritional gaps that plant-based diets require active management of. Made in the UK, suitable for vegetarians, designed for consistent long-term daily use.
Common Mistakes People Make With Vegan Diets & Skin Health
Becoming Overly Restrictive
Highly restrictive eating may increase stress and nutrient deficiencies.
Ignoring Protein & Healthy Fats
Skin repair depends on balanced nutrition.
Relying On Ultra-Processed Vegan Foods
Plant-based junk food may still affect inflammation.
Expecting Instant Skin Changes
Skin improvements usually happen gradually over time.
Long-term consistency and balance are usually more sustainable than extreme dieting.
FAQ
Can going vegan help psoriasis?
A well-planned whole-food plant-based diet may reduce inflammatory load through lower arachidonic acid, higher fibre, and higher polyphenol intake. An unplanned one risks B12, zinc, and omega-3 deficiencies that worsen psoriasis.
Can vegan diets improve eczema?
Similarly — potential benefit from higher fibre and polyphenols; significant risk from zinc and EPA/DHA deficiency if not supplemented. The outcome depends largely on how well-planned the diet is.
Why is gut health linked to eczema and psoriasis?
The gut microbiome helps regulate inflammation and immune responses linked to skin health.
Can vegan diets cause nutrient deficiencies?
Yes. Poorly planned vegan diets may lack nutrients important for skin health, including B12, zinc and omega-3 fats.
What supplements do vegans with psoriasis or eczema need?
B12 (non-negotiable), algae-based omega-3 EPA/DHA, vegan D3, and bioavailable zinc are the priority supplements for this combination.
Why is B12 important for skin conditions?
B12 deficiency affects keratinocyte function, elevates pro-inflammatory homocysteine, and compounds fatigue already associated with psoriasis. Every vegan needs a reliable daily supplement.
Is dairy bad for eczema or psoriasis?
Some people believe dairy may worsen symptoms, although reactions vary significantly between individuals.
Are plant-based diets anti-inflammatory?
No — ultra-processed vegan foods carry the same emulsifier, refined sugar, and NF-κB-activating content as their non-vegan equivalents. Whole-food plant-based eating is anti-inflammatory; processed plant-based eating is not.
Summary
A whole-food plant-based diet has genuine anti-inflammatory advantages for psoriasis and eczema — reduced arachidonic acid substrate, higher fibre and polyphenol density, lower ultra-processed food load. An unplanned vegan diet risks specific deficiencies in B12, zinc, EPA/DHA, and vitamin D that are directly relevant to barrier function, immune regulation, and eczema/psoriasis severity. The dietary approach is not inherently beneficial or harmful — the planning determines the outcome. Supplementation with B12, algae-based omega-3, vegan vitamin D3, and bioavailable zinc addresses the principal gaps of plant-based diets in the context of these skin conditions.
In Short
Vegan diets may reduce intake of certain inflammatory foods for some people
Plant-based diets are often higher in fibre and antioxidants
Some people notice improvements in psoriasis or eczema symptoms
Restrictive vegan diets can also lead to nutrient deficiencies
A well-planned vegan diet reduces arachidonic acid and increases fibre and polyphenols — but vitamin D and zinc remain the two nutritional gaps most specifically relevant to eczema and psoriasis that plant-based eating doesn't reliably correct. Drought's Skin Support Formula provides both alongside 12 other nutrients, addressing the internal gaps that even a well-structured plant-based diet leaves open. Made in the UK, suitable for vegetarians, designed for consistent long-term daily use.
Start your skin support journey →
Written by the Drought Skin team — specialists in natural support for psoriasis, eczema and acne
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The Anti-Inflammatory Diet for Psoriasis: Why It Works & How to Build It
Omega-3 for Eczema: How It Works, What the Research Shows & How to Get Enough
Fibre and Eczema: The Gut-Skin Mechanism and How to Get More
Can Seeds Be Beneficial for Eczema & Psoriasis?
Ultra-Processed Foods and Psoriasis: The Evidence, the Mechanisms & What to Do
