What is the primary function of dietary fats?

The primary function of dietary fats is to provide energy and support cell growth. Fats are a crucial macronutrient, offering a concentrated source of energy, with each gram providing approximately nine calories. This makes them an efficient source of energy for the body, particularly during long-duration activities. Furthermore, fats play a significant role in supporting cell growth as they are integral components of cell membranes. The inclusion of fats in the diet is vital for maintaining the structural integrity of cells and ensuring they function properly.

In addition to providing energy and supporting cell growth, fats are important for storing vitamins and acting as signaling molecules in various biological processes. However, while options discussing vitamin absorption may touch on the role of fats, they do not encompass the comprehensive energy and growth functions that fats specifically serve. This distinction makes the first choice the most pertinent answer to the question about the primary function of dietary fats.