What is one of the primary roles of fats in human nutrition?

Fats play a crucial role in human nutrition, particularly in supporting cell growth. They are a primary component of cell membranes, which consist mainly of phospholipids, a type of fat. This structural role is critical as it helps maintain the integrity and fluidity of cells, allowing for proper function and communication between them.

Additionally, fats serve as a concentrated source of energy, providing more than twice the calories per gram compared to carbohydrates and proteins. This energy is essential for various biological functions, including the growth and repair of cells.

While fats do play a role in the absorption of certain essential vitamins (such as vitamins A, D, E, and K), the primary question focuses on their role in supporting cell growth, which is a fundamental aspect of how fats contribute to overall nutrition and health.