Atopic dermatitis (AD), commonly referred to as eczema, is a chronic inflammatory skin condition that affects millions of people worldwide. Characterised by itchy, red, and inflamed skin, it can significantly impair the quality of life for those who suffer from it. While the exact causes of atopic dermatitis remain unclear, researchers have long explored the potential role of diet in managing or exacerbating the condition. There is a common myth surrounding eczema: could what we eat influence the severity of eczema symptoms? Let’s delve into the connection between atopic dermatitis and diet, examining current research, dietary triggers, and strategies for managing symptoms through nutrition.

 

Understanding atopic dermatitis

 

Atopic dermatitis is a complex condition influenced by a combination of genetic, environmental, and immune system factors. It is part of the “atopic triad,” which includes asthma and allergic rhinitis, indicating a strong link to allergic responses. The skin barrier in individuals with AD is often compromised, making it more susceptible to irritants, allergens, and infections.

While diet alone is unlikely to cause atopic dermatitis, it can play a role in triggering or alleviating symptoms. This is particularly true for individuals with food allergies or sensitivities, which are more common among those with eczema.

 

The role of food allergies and sensitivities

 

Food allergies and sensitivities are often discussed in relation to atopic dermatitis. Research shows that between 20% and 80% of children with moderate to severe eczema also have food allergies. Common allergens include:

• Cow’s milk
• Eggs
• Soy
• Wheat
• Peanuts
• Tree nuts
• Shellfish

When a person with a food allergy consumes the offending food, their immune system reacts, potentially leading to an eczema flare-up. However, it’s important to note that not all individuals with atopic dermatitis have food allergies, and not all food allergies result in skin symptoms.

 

The gut-skin connection

 

Emerging research highlights the potential link between gut health and skin health, often referred to as the “gut-skin axis.” The gut microbiome, a collection of trillions of microorganisms living in the digestive tract, plays a crucial role in regulating the immune system and inflammation. An imbalance in the gut microbiome, known as dysbiosis, has been associated with various inflammatory conditions, including atopic dermatitis.

Certain dietary choices may influence the gut microbiome and, by extension, skin health. For example:

• Probiotics: Found in fermented foods like yoghurt, kimchi, miso, and tempeh, probiotics can help restore balance to the gut microbiome. Some studies suggest that probiotics may reduce the severity of eczema symptoms, particularly in children.
• Prebiotics: These are fibres that feed beneficial gut bacteria. Foods like garlic, onions, bananas, soybeans, and whole grains are rich in prebiotics and may support gut health.

While the gut-skin connection is a promising area of research, more studies are needed to fully understand its implications for atopic dermatitis.

 

Anti-inflammatory diets and eczema

 

Inflammation is a key feature of atopic dermatitis, so it’s no surprise that anti-inflammatory diets have gained attention as a potential way to manage symptoms. These diets emphasise foods that reduce inflammation in the body while avoiding those that may promote it.

 

Foods to include:

• Fruits and vegetables: Rich in antioxidants, vitamins, and minerals, these foods can help combat oxidative stress and inflammation. Leafy greens, berries, and citrus fruits are particularly beneficial.
• Omega-3 fatty acids: Found in fatty fish like salmon, mackerel, and sardines, as well as in flaxseeds and walnuts, omega-3s have anti-inflammatory properties.
• Whole grains: Unlike refined grains, whole grains provide fibre and nutrients that support overall health.
• Herbs and spices: Turmeric, ginger, and cinnamon are known for their anti-inflammatory effects.

 

Foods to avoid:

• Processed foods: High in sugar, salt, and unhealthy fats, processed foods can contribute to inflammation.
• Refined carbohydrates: Foods like white bread and sugary snacks can cause blood sugar levels to rise sharply and promote inflammation.

 

Elimination diets: Proceed with caution

 

Elimination diets involve removing specific foods from the diet to determine whether they are triggering eczema symptoms. While these diets can be helpful for identifying food allergies or sensitivities, they should be approached with caution. Eliminating too many foods without proper guidance can lead to nutritional deficiencies, particularly in children.

If you suspect that certain foods are worsening your eczema, consult a Gleneagles dermatologist before making significant dietary changes. They can help you design a balanced elimination diet and reintroduction plan to pinpoint triggers without compromising your overall health.

 

Practical tips for managing atopic dermatitis through diet

 

1. Keep a food diary: Track what you eat and any changes in your eczema symptoms to identify potential triggers.

2. Focus on balance: Aim for a diet rich in whole, unprocessed foods that provide essential nutrients.

3. Stay hydrated: Drinking plenty of water can help maintain skin hydration and overall health.

4. Consult professionals: Work with a dermatologist, allergist, or registered dietitian to develop a personalised dietary plan.

 

Conclusion

 

While diet alone cannot cure atopic dermatitis, it can play a significant role in managing symptoms and improving overall skin health. By understanding the potential connections between food, gut health, and inflammation, individuals with eczema can make informed dietary choices to support their well-being.

Whether it’s incorporating more anti-inflammatory foods, exploring the benefits of probiotics, or identifying specific triggers through an elimination diet, there are numerous ways to use nutrition as a tool in the fight against eczema.

At TSN Dermatology Skin Specialist Clinic, our doctors are experts in providing personalised care for eczema. If you need help with your skin problems, do not hesitate to contact us!

 

References

 

Dhar, S., & Srinivas, S. M. (2016). Food Allergy in Atopic Dermatitis. Indian journal of dermatology, 61(6), 645–648. https://doi.org/10.4103/0019-5154.193673

Diet & Nutrition. National Eczema Association. (2025, March 21). https://nationaleczema.org/eczema-management/diet-nutrition/