The importance of diet in psoriasis.

The impact of diet on psoriasis is not well studied but it is of interest to many patients. A hypocaloric diet with corresponding weight loss can reduce psoriasis severity in overweight or obese patients and should be considered an important supplement to conventional therapy, as argued in this review. Gluten-free diet might improve severity of psoriasis in patients with coeliac disease or merely presence of coeliac-specific antibodies. Mediterranean diet might also be beneficial. Overall, studies do not support a beneficial effect of micronutrient supplements (i.e., vitamin D, selenium, vitamin B12) in patients with normal serum levels.