Which nutrient provides energy, protection, and warmth to the body?

Fat is the nutrient that provides energy, protection, and warmth to the body. It is an essential macronutrient that supplies a concentrated source of energy, yielding approximately nine calories per gram, which is more than double the energy provided by carbohydrates or protein.

Additionally, fat plays a crucial role in protecting vital organs by forming a cushion around them, which helps to absorb shocks and prevent injury. It also serves as insulation, helping to maintain body temperature by minimizing heat loss.

While other nutrients provide important functions in the body, such as fiber promoting digestive health, protein supporting growth and repair of tissues, and vitamins acting as vital co-factors in biochemical processes, they do not offer the same combination of energy supply, protection, and insulation that fat does.