“…143 High levels of worry and stress have been found to aggravate disease activity, and aggravate the therapeutic benefit of Psoralen and UVA therapy (PUVA). 144 Attempts to look at diet including diets rich in zinc, 145 and turkey meat, 146 diets low in tryptophan, 147 protein, 148 or calories 149 seem to have little impact. As mentioned before, in patients with both celiac disease and psoriasis, diets low in gluten have been shown to be useful in improving both conditions.…”