Fats

Fats should provide approximately 20–35 percent of the average daily caloric intake. Fats serve three important functions:

1. They are essential nutrients important for the absorption of vitamins D, E, A, and K, which are fat-soluble vitamins.
   
2. They are necessary to provide the body’s energy.
   
3. They assist in maintaining the core body temperature.
   

Fats are classified as saturated or unsaturated. Saturated fats tend to be solid at room temperature, and unsaturated fats tend to be in liquid form. Saturated fats can have an adverse effect on the body, increasing the risk for disease and cardiac damage; they are mainly found in meat and dairy products. Unsaturated fats tend to benefit health and support cardiac function; they are found mainly in foods derived from plants and fish.