The Mediterranean Diet and Time-Restricted Eating Dietary Interventions for Psoriasis Study

"Participants in the Mediterranean style diet group will be provided with recommendations to include a minimum of 5 servings of fruits and vegetables (combined) per day, 2 servings of whole grains per meal per day, at least two servings of extra virgin olive oil per day, a maximum two servings of dairy products per day (excluding milk in coffee/tea), a minimum of 3 servings of fish per week (of which two should be oily fish), less than 2 servings of red meat or processed meat per week. Confectionary and sugar sweetened beverages should be limited to less than 2 servings per week.~Participants randomised to the Mediterranean style intervention will be provided with support documents including a dietary guideline booklet, recipes, meal plans, shopping and product swap lists, as well as eating-out and budget-eating advice sheets. Food deliveries containing key food items of the diet intervention will be scheduled for week 1, week 4, and week 8 of the study."

"Participants in the UK diet with time-restricted eating group will be provided with recommendations of a nutritionally balanced diet, corresponding to the average intakes of the UK population. Participants will be advised to consume no more than 4 portions of fruits and vegetables combined per day, to have at least two servings of dairy per day, to limit the consumption of white fish to less than 1 serving per week, with ≤1 serving of oily fish per month. Nuts and seeds consumption should also be limited to ≤1 serving per week and at least 3 servings of white and red meat should be consumed per week.~Participants randomised to the UK diet will be provided with support documents including a dietary guideline booklet, recipes, and meal plans. A £30 reimbursement will be provided to participants for their grocery shopping on week 1, week 4, and week 8 of the study."

Participants randomised to the time-restricted eating interventions will be advised to limit food intake to a 10-hour eating window and to abstain from food intake for a 14-hour fasting window. Hydration is to be maintained during the fasting window with water and/or plain teas/coffees