A new study (Eur J Clin Nutr. 2009 Aug 26) reports that a diet rich in virgin olive oil increases levels of beneficial antioxidants better than other types of diets, over a 3-year period. Increasing total plasma antioxidant capacity with olive oil in the diet is advantageous in terms of not only its preventive role for various health problems, but also weight reduction.
Try switching over to olive oil as a primary source of fats in the diet. The data seem to be piling up to support its use.