In March 2020 researchers from Canada and the USA published the results of their study to assess whether increased gluten intake is associated with psoriasis, psoriatic arthritis, and atopic dermatitis in adult women. A total of 85,185 women with psoriasis, 85,324 with psoriatic arthritis and 63,443 with atopic dermatitis were involved in the study. Dietary information was collected every four years via a food frequency questionnaire and used to calculate the amount of gluten in the diet. Results showed that an increased gluten intake was not associated with any of the medical conditions. The researchers therefore concluded that their findings did not support the amount of dietary gluten intake as being a risk factor for psoriasis, psoriatic arthritis, or atopic dermatitis in adult women.
Drucker AM et al. Gluten intake and risk of psoriasis, psoriatic arthritis, and atopic dermatitis among United States women. J Am Acad Dermatol. 2020 Mar;82(3):661-665.