For many years, common nutritional wisdom preached that fat was the enemy. Recently, however, this view has softened and a more moderate approach has been adopted in respect to fat intake. Despite what you might have heard, certain fats are vital for basic sustenance. They are involved in cushioning your internal organs for protection, aiding in the absorption of vitamins and facilitating the production of cell membranes, hormones and prostaglandins. Physiologically, it would be impossible to survive without the inclusion of fats in your diet.
Saturated fats have virtually no biological purpose.
If you don't burn them immediately for fuel, they either are stored in adipose cells throughout your body or become oxidized as fatty deposits in your arteries. But that's not all. These fats tend to make your muscles less responsive to insulin and inhibit your body's ability to store sugars as glycogen. In addition, they are extremely biologically active and actually help to increase your metabolic rate while enhancing the ability of your muscles to use insulin. Ultimately, this results in better fat metabolism and improved body composition.