Find out how knowledgeable you are about fat in your diet. Do you know what foods are hiding unexpected fats? 1. Many people are fat-phobic, but fat can actually be beneficial. Which of the following is NOT a useful benefit of fat in foods? Fats provide necessary essential fatty acids. Fats transport fat-soluble vitamins such as A, D, E, and K throughout our bodies. Fat provides a healthier low-calorie source of energy than carbohydrates do.