Supplements for Psoriasis: What the Evidence Suggests
Psoriasis is a chronic inflammatory skin condition that affects millions of people worldwide. It’s characterised by red, scaly patches of skin, often accompanied by itching, irritation, and flare-ups that can feel unpredictable. While prescription treatments remain the cornerstone of management, many people explore nutritional strategies and supplements to help support skin health and reduce inflammation.
It’s important to be clear: supplements are not a cure for psoriasis. However, some nutrients and compounds may help support immune balance, skin barrier function, and systemic inflammation — all of which play a role in the condition.
Understanding Psoriasis and Inflammation
Psoriasis is considered an immune-mediated condition. The immune system becomes overactive, leading to rapid skin cell turnover and chronic inflammation. Research also shows that psoriasis is associated with increased risk of metabolic syndrome, cardiovascular disease, and insulin resistance — reinforcing that it’s more than “just a skin issue”.
Because inflammation is central to psoriasis, many supplements studied in this context focus on anti-inflammatory support, immune modulation, and skin integrity.
1. Omega-3 Fatty Acids
Omega-3 fatty acids, particularly EPA and DHA from oily fish or fish oil supplements, are among the most studied nutrients for inflammatory conditions.
Omega-3s may help reduce inflammatory signalling pathways and improve skin symptoms in some individuals. Clinical studies have shown mixed but promising results, with some people experiencing reductions in redness, scaling, and lesion severity.
Given that many people in the UK and Ireland consume low amounts of oily fish, omega-3 supplementation may be particularly relevant.
2. Vitamin D
Vitamin D plays a key role in immune regulation and skin cell growth. Interestingly, topical vitamin D analogues are commonly used in psoriasis treatment.
Low vitamin D levels are frequently observed in people with psoriasis, and supplementation may be beneficial where deficiency is present. In low-sunlight regions such as Ireland and the UK, maintaining adequate vitamin D status is especially important.
Testing levels before supplementing at higher doses is advisable.
3. Curcumin (Turmeric Extract)
Curcumin, the active compound in turmeric, has anti-inflammatory properties and has been studied for its effects on inflammatory and autoimmune conditions.
Some small studies suggest curcumin supplementation may improve psoriasis severity when used alongside conventional treatments. Bioavailability can be a limiting factor, so high-quality, enhanced-absorption formulations tend to be preferred.
4. Probiotics and Gut Health
Emerging research suggests a connection between gut health and inflammatory skin conditions — sometimes referred to as the “gut-skin axis”.
People with psoriasis may have altered gut microbiota compared with healthy individuals. While research is still developing, certain probiotic strains may help support immune balance and reduce systemic inflammation.
This area remains promising but not yet definitive.
Weight Management and Insulin Sensitivity
Psoriasis severity is often worse in individuals with obesity or insulin resistance. While not a supplement itself, improving metabolic health can meaningfully impact inflammation levels.
In some cases, nutrients such as omega-3s, vitamin D, and magnesium may indirectly support metabolic function — which in turn may influence inflammatory burden.
What About Biotin or Collagen?
Biotin is commonly marketed for skin and hair health, but there is currently limited evidence supporting its use specifically for psoriasis.
Collagen may support general skin structure and hydration, but again, evidence for direct psoriasis improvement is limited.
Important Considerations
- Supplements should complement — not replace — medical treatment.
- Quality, dosage, and bioavailability matter.
- Individual responses vary significantly.
- Always consult a healthcare professional before starting new supplements, particularly if you are on medication.
Final Thoughts
There is no single supplement that “fixes” psoriasis. However, evidence suggests that omega-3 fatty acids, vitamin D (where deficient), curcumin, and possibly probiotics may provide supportive benefits by reducing inflammation and supporting immune balance.
The most effective strategy is often a combined approach: appropriate medical care, nutrient optimisation, metabolic health support, and consistent lifestyle habits that reduce systemic inflammation.
Supplements are tools — not miracles — but used strategically, they may help support better long-term skin health.
References:
Upala, S. et al. (2017). Effect of omega-3 fatty acids on psoriasis. Journal of the American Academy of Dermatology.
Orgaz-Molina, J. et al. (2012). Vitamin D levels in patients with psoriasis. British Journal of Dermatology.
Kurd, S. K. et al. (2015). Psoriasis and metabolic syndrome. Journal of Investigative Dermatology.
Chen, Y. et al. (2018). Curcumin in inflammatory skin disease. Phytotherapy Research.
Salem, I. et al. (2018). The gut microbiome and psoriasis. Journal of Dermatological Science.