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Psoriasis is associated with obesity. Does weight loss improve Psoriasis Area and Severity Index (PASI) scores? To address this question, 60 overweight patients (body-mass index, >27) with psoriasis were enrolled in a prospective Danish comparison study. Thirty subjects underwent intensive weight-loss therapy (WLT; formula diets of 800–1200 kcal/day), and the nonintervention group continued “standard routine dietary guidance.” All subjects were older than 18 and in good health and had stable weight and plaque-type psoriasis. Antipsoriatic treatments were allowed if treatment had been stable for 3 months. Patients were instructed not to change psoriasis treatments, amount of tobacco use, or levels of physical exercise. Psoriasis severity was…