A type of fat from plants or vegetables that is usually soft at room temperature, including cottonseed, soybean, corn oil and safflower oil. Polyunsaturated fats can help lower blood cholesterol levels.
A class of fats generally considered healthy. They are found in greatest amounts in corn, soybean, and safflower oils-all of which are liquid at room temperature-and in many types of nuts.
Fats that do not have an effect in cholesterol levels. Most of the fats in vegetable oils, such as corn, cottonseed, safflower, soybean, and sunflower oil are polyunsaturated.