Then why are we urged to limit our fat intake?
Though the jury is still out on whether certain fats cause cancer, trans-fatty acids, or oils that have been treated in order to remain solid at room temperature -- such as shortening and margarines -- are chemically unstable and may be linked to cell damage. That's also the case with polyunsaturates, which are found in abundance in the three staple oils of Asian cuisine: peanut, soybean and coconut.