Which nutrient is known as the primary source of energy for the body?

Carbohydrates are recognized as the primary source of energy for the body. When consumed, carbohydrates are broken down into glucose, which is then utilized for energy to fuel various bodily functions, including physical activity, metabolism, and cognitive processes. This energy is essential for daily activities and is quickly accessible compared to other nutrients.

Proteins serve different roles, mainly in building and repairing tissues, and while they can provide energy, they are not the body's preferred source under normal circumstances. Fats act as a secondary energy source, providing more energy per gram than carbohydrates or proteins, but they take longer to break down. Vitamins are crucial for various biochemical functions but do not offer energy themselves. Understanding these distinctions highlights why carbohydrates are the go-to energy source for the body.