Foods to avoid with eczema: 6 common triggers
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With eczema (atopic dermatitis), you see redness, itching, flaking, and inflammation on the outside, but underneath the surface, gut flora, intestinal wall (barrier), immune reactions, and inflammatory triggers often play a role. In the so-called gut-skin axis, the intestines and skin continuously communicate via the immune system and inflammatory substances. If the gut flora becomes imbalanced (dysbiosis) or the intestinal barrier becomes more sensitive, the immune system can become "activated" more quickly. This can make the skin more irritable, even in existing eczema patches.
Orthomolecular approach: we look at stimuli that unnecessarily burden the body (inflammatory triggers, histamine load, blood sugar fluctuations, food sensitivities) and at foods that support the gut/skin barrier. This does not mean that "one food is THE cause," but it does mean that diet can make a big difference for many people.
1) Sugar & ultra-processed foods
Why avoid? Sugary and highly processed products can intensify inflammatory processes and cause peaks/dips in your blood sugar (more "stress signals" in the body). In orthomolecular terms: you create more internal unrest, which can be unfavorable for an overstimulated immune system.
Examples: soft drinks, sweets, cookies, sugary breakfast cereals, fast food, snacks, sauces with a lot of sugar/refined oils.
2) Dairy (especially cow's milk) — particularly with clear sensitivity
Why avoid? For some people with eczema, cow's milk (or a cow's milk protein reaction) can worsen symptoms. Not everyone reacts, but for a subgroup, elimination can help, especially if there is a clear link to itching/redness.
Practical: test this temporarily (e.g., 2–4 weeks) and evaluate objectively (itch score, sleep, patches).
3) Eggs — classic food trigger
Why avoid? Eggs are often at the top of foods that can trigger eczema in sensitive individuals (allergic or non-allergic). Again, this is especially relevant if you observe a clear pattern yourself.
4) Gluten / wheat products — especially with gut complaints or clear correlation
Why avoid? Wheat/gluten can contribute to gut irritation or immune activation in some people (especially if there are already digestive complaints). It's not a "must" for everyone, but in practice, it is a common test category within a low-stimulus diet.
5) Soy & highly processed soy
Why avoid? Soy often appears in elimination protocols because it can act as a trigger for some people (especially in highly processed form and hidden in many products). In food trigger literature regarding eczema, soy is regularly mentioned as a possible trigger.
6) Foods high in omega-6 (and low omega-3 balance)
Why avoid? A diet high in omega-6 (especially from some vegetable oils and ultra-processed snacks) can unfavorably affect the inflammatory balance, especially if omega-3 intake is low. This is not an "eczema ban," but it is a relevant orthomolecular lever (fatty acid balance).
Examples: many products with sunflower/corn/soybean oil, fried foods, chips, cookies.
How to approach this realistically (without being extreme)
- Start with 1–2 categories that you most suspect trigger you (often: sugar/ultra-processed + dairy or gluten).
- Test for 2–4 weeks, keep a simple tracker: itch (0–10), sleep, redness, scratching, stress, bowel movements.
- Replace smartly (don't just cut out): more unprocessed meals, sufficient protein, fiber, healthy fats.
- Beware of pitfalls: prolonged elimination without reason can actually maintain new sensitivities or cause deficiencies.
Want to read more? Here are three studies that delve deeper into the relationship between diet and eczema: