What are fats? Write two paragraphs

Fats - substances that help the body use some vitamins and keep the skin healthy; they are also the main way the body stores energy. In food, there are many types of fats -- saturated, unsaturated, polyunsaturated, monounsaturated, and trans fats. To maintain your blood cholesterol and triglyceride (lipid) levels as near the normal ranges as possible, the American Diabetes Association recommends limiting the amount of saturated fatsand cholesterol in our diets. Saturated fats contribute to blood levels of LDL (''bad'') cholesterol. The amount of saturated fats should be limited to less than 10% of total caloric intake, and the amount of dietary cholesterol should be limited to 300 mg/day.