In this video I discuss the functions that fat has in the body. Transcript (partial) So, what is fat in the nutritional world? Well, it is one of the macronutrients, along with carbs and protein. It is an essential part of our diet and nutrition, and we cannot live without it. Fats are found in most foods, some foods have a high fat content, and some have just trace amounts. The Functions of fats The 1st function of fat is energy. 1 gram of fat provides 9 calories of energy to our bodies, whereas Carbs and protein only provide 4 calories per gram. Through a process called lipolysis, Fat is used as a source of backup energy in cases when carbs are not available. 2nd, fat insulates the body. There is a thin fat layer underneath the skin that keeps heat inside the body, maintaining proper temperature. This layer also protects the inner core from extreme temp changes. 3rd, there is a layer of fat that surrounds major organs and acts like a cushion, adsorbing shock from a sudden impact. 4th, fats help with satiety control. Because fat stays in the stomach longer than other energy nutrients, it makes people feel fuller longer. 5th, Fat is needed to absorb certain vitamins. Vitamins a,d,e and k are fat soluble, which means, without fat they could not be absorbed into the body. Timestamps 0:00 What is fat nutritionally? 0:23 Fats provide insulation 0:39 Fats provide protection 0:51 Fats in energy production 1:04 Fats help in satiety control 1:14 Fats help absorb some vitamins