Which nutrient is considered a major source of energy?

Carbohydrates are considered a major source of energy for the body. They serve as the body's primary fuel, particularly for the brain and during physical activity. When consumed, carbohydrates are broken down into glucose, which is then utilized by cells for energy production. This readily available energy is crucial for maintaining daily activities and overall bodily functions.

While fats and proteins also contribute to the body's energy needs, carbohydrates are the most efficient and preferred energy source. Fats serve as a secondary source of energy, offering more calories per gram, but they take longer to metabolize. Proteins are primarily used for building and repairing tissues rather than as a primary energy source. Vitamins, on the other hand, do not provide energy directly; instead, they play essential roles in metabolic processes that help the body utilize energy from macronutrients. Thus, carbohydrates are pivotal for immediate energy needs.