Psoriasis and Diet: Understanding the Connection

The relationship between diet and psoriasis continues to be an area of ongoing discussion among healthcare professionals.

From both personal experience living with psoriasis for many years and professional practice in Chinese Medicine, I have observed that dietary patterns may influence how some individuals experience skin and joint symptoms.

It is important to note that responses to dietary changes vary significantly depending on the individual, the severity of symptoms, and other lifestyle factors.

Psoriasis is a complex inflammatory condition, and nutrition is one of many factors that may contribute to overall wellbeing.

How Food May Influence Psoriasis Symptoms

While there is no single dietary approach suitable for everyone, research and clinical observations suggest several mechanisms through which food may influence inflammation:

1. Insulin resistance and carbohydrate intake

Some studies have identified an association between moderate to severe psoriasis and insulin resistance.

In this context, the type and quantity of carbohydrates consumed may influence metabolic and inflammatory pathways. For this reason, some practitioners may recommend focusing on low glycaemic index (low GI) carbohydrates and balanced portion sizes as part of a broader dietary strategy.

2. Gluten and inflammatory response

Some research suggests that gluten may contribute to increased inflammatory activity in certain individuals.

While not all people with psoriasis are sensitive to gluten, some may choose to trial gluten reduction or elimination under professional guidance, particularly in more severe or persistent cases.

3. Pro-inflammatory vs anti-inflammatory foods

It is well established in nutritional science that certain foods may promote inflammatory processes, while others may support anti-inflammatory pathways.

For individuals managing psoriasis or psoriatic arthritis, dietary strategies often focus on:

• Reducing highly processed or inflammatory foods
• Increasing nutrient-dense, whole foods
• Supporting gut and metabolic health through balanced nutrition

General Dietary Considerations for Psoriasis & Psoriatic Arthritis

The following food list is often used in clinical settings as a general reference guide. Individual tolerance can vary significantly.

Foods commonly reduced or avoided (individual variation applies)

Highly processed foods

• Packaged and refined products
• Processed cereals and refined grains

Certain sugars and refined carbohydrates

• High-sugar foods and beverages
• Refined baked goods

Some dairy or gluten-containing products (where sensitivity is present)

Certain meats and seafood (depending on tolerance)

• Processed meats
• Some red meats
• Shellfish (for some individuals)

Certain additives and condiments

• Highly processed sauces and condiments
• Artificial additives where applicable

Foods commonly included in a supportive dietary pattern

Fruits (variety, whole food focus)

• Apples, pears, peaches
• Berries and melons
• Stone fruits in moderation

Vegetables (wide variety encouraged)

• Leafy greens such as spinach and kale
• Cruciferous vegetables like broccoli and cauliflower
• Root vegetables such as sweet potato and carrot
• Zucchini, cucumber, celery, and others

Grains (where tolerated)

• Quinoa
• Brown rice
• Buckwheat and millet

Proteins

• Chicken, turkey, lamb (depending on tolerance)
• Fish such as salmon, sardines, and white fish varieties

Nuts and seeds (where tolerated)

• Almonds, walnuts, macadamias
• Flaxseeds, chia, pumpkin seeds

Individual Variation Is Important

It is important to emphasise that dietary responses are highly individual.

Some people may notice changes in symptoms when modifying their diet, while others may not experience noticeable differences.

For this reason, dietary strategies are often most effective when personalised and implemented alongside professional guidance.

Diet Is One Part of a Broader Approach

In clinical practice, diet is typically considered one component of a broader management strategy.

Nutritional changes alone may not address all aspects of psoriasis or psoriatic arthritis. A comprehensive approach may also consider:

• Skin-focused treatments for symptom management
• Stress and lifestyle factors
• Sleep and recovery patterns
• Ongoing medical support where appropriate

Long-Term Psoriasis Management Perspective

A structured approach often involves different phases of care:

1. Symptom support phase – focusing on reducing discomfort and visible flare activity
2. Stabilisation phase – supporting reduction in symptom frequency and intensity
3. Maintenance phase – supporting long-term skin and joint health through lifestyle and ongoing care

This layered approach reflects the complex and chronic nature of psoriasis, which has no single known cure.

Final Note

Psoriasis management is highly individual and may involve a combination of dietary, topical, lifestyle, and medical approaches.

Nutrition may play a supportive role in reducing inflammatory load for some individuals, but outcomes vary and should be considered as part of a broader, personalised care plan guided by qualified health professionals.