The role of saturated fats in human nutrition includes providing energy and supporting cellular functions. Saturated fats are a source of concentrated energy, yielding 9 calories per gram. They play a key role in the absorption of fat-soluble vitamins like A, D, E, and K, which are essential for various bodily functions. However, it's important to consume saturated fats in moderation, as excessive intake can contribute to cardiovascular diseases. Balancing saturated fats with healthy fats, such as unsaturated fats, is crucial for maintaining overall health.