The primary role of dietary fat in the body is to provide a concentrated source of energy and support various biological functions. Fats are essential for the absorption of fat-soluble vitamins (A, D, E, and K) and are crucial components of cell membranes. They also play a vital role in hormone production and help insulate and protect internal organs. While dietary fat is essential for health, it is important to consume it in appropriate amounts and focus on healthy sources like monounsaturated and polyunsaturated fats.