Dietary fat is the densest energy source available to your body, with each gram of fat containing more than twice the calories of a gram of carbohydrate or protein (9 versus 4, respectively). Healthy fats, such as those found in meat, dairy, olive oil, avocados, and various seeds and nuts, help your body absorb the other nutrients that you give it, nourish the nervous system, maintain cell structures, regulate hormone levels, and more.
