A small amount of fat is necessary for life. Fats are highly concentrated sources of energy. Fat digestion is inhibited with aging. Saturated fats are usually solid at room temperature. They are found in butter, lard, salt pork, meat fat, coconut or palm oil, and hydrogenated margarine or shortenings.
Some saturated fats are lard, coconut oil, palm oil, cream and butter.
Polyunsaturated fats tend to lower blood cholesterol. These oils are liquid at room temperature. Examples of oils high in polyunsaturated fats are corn, cottonseed, safflower, sunflower, sesame, and soybean. No vegetable oil contains cholesterol. Dietary cholesterol should be limited to 300 mg or less per day.