Glucose is the form of sugar in the blood that is the primary source of fuel used by the nervous system. Glucose is stored in the liver and muscle tissue. Fats can be used as energy, or fats can be stored in body. Fat insulates our organs and is involved in the transportation of the fat-soluble vitamins. Fat is also the essential source of fatty acids.
Saturated fats are solid at room temperature.
They are found primarily in animal sources such as meats, dairy, and eggs. Unsaturated fats are liquid at room temperature. They are divided into polyunsaturated and monounsaturated fats. These fats are found primarily in foods of plant origin such as oils, nuts, and fish.