Eczema is more than skin-deep.

Flare-ups can be itchy, sore, and unpredictable, and while creams and lotions may soothe the surface, they don’t always get to the root of the problem. Increasingly, research shows that what’s happening in the gut can play a central role in skin health.

If you or someone you love struggles with eczema, understanding the gut–skin connection
could open new doors to managing flare-ups more effectively.

Why Eczema Isn’t Just About Skin

Eczema (also called atopic dermatitis) is an inflammatory condition that affects millions
worldwide. It often begins in childhood, but many adults continue to experience flare-ups.
The condition can range from mild irritation to severe, painful rashes that interfere with
sleep, work, and quality of life.

At its heart, eczema is a condition of immune system imbalance. Genetics play a role – some
people are simply more prone to developing eczema, but environmental and lifestyle factors
also influence how the condition shows up. When extra inflammation is added into the
system, flare-ups can become more frequent or more severe.

Conventional treatments like steroid creams and emollients focus on calming the skin
barrier, which is important. But the skin is also a reflection of what’s happening inside the
body, especially in the gut. This is where nutritional therapy can help.

The Gut–Skin Axis Explained

The “gut–skin axis” refers to the two-way communication between your digestive system and your skin. When your gut is balanced and functioning well, it supports a calm immune system and a strong skin barrier. When the gut is irritated or out of sync, it can fuel inflammation that shows up on the skin as redness, itching, and eczema.

Here are some of the ways the gut impacts eczema:

Gut lining integrity: Think of the gut lining as a protective wall. If that wall becomes damaged (“leaky gut”), unwanted particles can cross into the bloodstream and trigger immune reactions, adding to the inflammatory load.

Microbiome balance: The trillions of bacteria living in your gut influence immune responses throughout the body. When the good bacteria are crowded out by less helpful ones, the immune system may overreact — which can worsen skin flare-ups.

Immune regulation: Around 70% of the immune system is based in the gut. If this system is constantly on high alert, inflammation can spill over into other areas, including the skin.

This doesn’t mean every case of eczema is caused by gut issues, but it explains why supporting digestive health is such a powerful foundation for care.

Nutrition Strategies for Eczema Support

Every case of eczema is unique, but there are common nutrition and lifestyle steps that can
help reduce inflammation, strengthen the gut lining, and calm the immune system.

1. Feed Your Gut Lining

The gut lining needs certain nutrients to stay strong and resilient:

Zinc – found in pumpkin seeds, lentils, seafood, and poultry – supports tissue repair
and immune function.

Omega-3 fatty acids – from oily fish (salmon, mackerel, sardines), chia seeds, flaxseeds, or walnuts – help reduce inflammation.

Amino acids (from protein) – protein-rich foods such as eggs, chicken, fish, beans, and quinoa provide the building blocks for repairing the gut barrier.

2. Prioritise Fibre and Plant Diversity

A diverse, fibre-rich diet feeds beneficial bacteria in the gut, which in turn protect the gut lining. Aim for:

30 different plants per week (fruits, vegetables, wholegrains, legumes, nuts, seeds, herbs, and spices).

A rainbow of colours on your plate to maximise phytonutrients that support immunity and reduce inflammation.

3. Avoid Common Irritants

Certain foods and drinks can add fuel to the fire if the gut is already sensitive:

• Refined sugar can disrupt gut bacteria and drive inflammation.
• Excess alcohol irritates the gut lining and weakens nutrient absorption.
• Ultra-processed foods often contain additives, trans fats, and low-quality oils that the body finds harder to process.
• Rethink Common Triggers. Certain foods – particularly gluten, refined sugar, and dairy can make this inflammation worse. Reducing or removing these common triggers, even for a period of time, can help calm the gut and give the skin a chance to settle.

Removing these doesn’t mean restriction forever, but reducing them can create space for healing.

4. Support Calm and Reduce Stress

Stress is a well-known eczema trigger. Stress hormones like cortisol can weaken the gut lining and alter gut bacteria, increasing the chance of flare-ups. Simple stress-support practices can help break the cycle:

• Regular movement (walking, yoga, stretching).
• Breathing techniques or meditation.
• Consistent, good-quality sleep.

Lifestyle Factors Beyond Food

Food is a cornerstone, but it isn’t the whole picture. Eczema flare-ups can also be influenced by:

• Environmental triggers: detergents, fragranced skincare, pollen, dust, or animal dander.
• Weather and climate: cold, dry air or sudden changes in humidity can dry and irritate the skin.
• Sleep: lack of restorative sleep increases inflammation and reduces skin repair.

Taking a holistic view means considering both the internal (gut, diet, stress) and external (environment, lifestyle) factors at play.

When to Seek Professional Support

Because eczema is complex and highly individual, it can be difficult to figure out what will make a difference for you. This is where professional guidance helps.

A registered nutritional therapist will:

• Take a detailed case history, looking at your symptoms, lifestyle, and health background.
• Identify patterns or triggers you may not see yourself.
• Create a personalised plan to support gut health, reduce inflammation, and strengthen the skin barrier.
• Work alongside your GP or dermatologist to ensure your care is safe and complementary.
• Use functional tests (such as stool or nutrient panels) if needed, to get a clearer picture of what’s happening inside your body.

When I was training in nutritional therapy, I had plenty of knowledge, but I still needed the perspective of a qualified practitioner to help me make sense of my own health. Even now, I sometimes outsource my care when I feel stuck, because having someone look in from the outside makes all the difference.

Can Nutrition “Cure” Eczema?

It’s important to be realistic: there is no single “eczema diet,” and nutritional therapy isn’t a magic cure. Eczema has a genetic component, and flare-ups can still happen. But by strengthening the gut and supporting the immune system, many people experience:

• Reduced frequency of flare-ups.
• Less severity when they do occur.
• Better energy, mood, and overall well-being.

For many, this shift is life-changing.

Bringing It All Together

Eczema may show up on the skin, but its roots often run deeper. The gut–skin axis highlights how closely our digestive health and skin health are linked. By nourishing the gut lining, supporting the microbiome, and calming inflammation, you can give your body a strong foundation to manage flare-ups more effectively.

If you’d like to explore how personalised nutrition could support your skin and overall health, I offer free discovery calls where we can talk about your unique situation and next steps.
Book your free call here