Hydrogenated fats are polyunsaturated fats that have undergone a process to make them solid at room temperature. The body utilizes this form in a way that is different from its use of the original fatty acids. While the effects of trans fatty acids are not completely understood, some researchers believe they produce potentially harmful changes in cholesterol, similar to those promoted by saturated fatty acids. Although protein can be converted into energy, its primary job in the body is to provide the building blocks needed for growth, repair and the maintenance of body tissues. This process continues day in and day out, and it requires protein.
Protein is found in practically every food.
Protein itself is made up of amino acids. During digestion, your body breaks protein down into these building blocks and uses some of them to build and rebuild body tissues, such as your skin, muscles and bones. They are described in this way because the body requires them but cannot manufacture them on its own. While almost all foods contain protein, only animal protein contains all nine essential amino acids in proportions needed by the body. Protein that comes from plant sources is considered to be less complete than protein from animal sources.