None

Do Vitamin D Supplements Help Psoriasis? We Asked a Dietitian

By Elena Donovan Mauer
Reviewed by Allison Truong, M.D.
April 11, 2022

Vitamin D is something we often hear people with psoriasis ask about. Sure, there are topical prescription vitamin D creams (such as calcipotriene or calcitriol) that can help soothe inflammation, but what about taking supplements orally or adding more vitamin D to your diet? We asked our nutrition expert, Elizabeth DeRobertis, a New-York based registered dietitian about vitamin D and whether it is worth the hype for improving psoriasis symptoms.

Why do we keep hearing about vitamin D for psoriasis and psoriatic arthritis?

Vitamin D has been a buzz vitamin for a few years now. Vitamin D is a nutrient that we eat, and also a hormone that our bodies produce. It is required for the body to absorb and retain calcium, so it’s long been known to be essential for bone health. A few years ago, there were some studies that found it may help to reduce cancer-cell growth; and then, more recently, some studies on COVID-19 found that taking vitamin D may be beneficial to boost immunity to the virus.

We know that we make vitamin D through exposure to the sun, and that the process happens through our skin. There are some studies that link vitamin D deficiencies to psoriasis. For example, one found a correlation between vitamin D deficiency and psoriasis, but it doesn’t look like the deficiency actually causes the psoriasis. (If low vitamin D levels always caused psoriasis, then many more people in the population would have psoriasis, but they do not.)

Want to Read the Rest?

Get the full article, and all of Kopa’s content and tools. Plus, connect with experts and people like you. Sign up or log in—it’s easy and free!