Another type of fat is hydrogenated fat . This is a polyunsaturated fat that has been processed so that it will be hard at room temperature. Hydrogenated fat also appears to increase the risk of heart disease. Margarine and shortening contain hydrogenated fat. Plant foods, except for coconut and palm oil, contain mainly MFA and PUFA with small amounts of saturated fats.
Some fat is necessary.
Our nerves need fat in their outer covering. Our internal organs, such as the heart, liver, and kidneys need a cushion of fat to protect them. Without some fat we would die. The problem comes when we eat too much fat. Saturated fat can raise the amount of cholesterol in the blood.