Which macronutrient is primarily responsible for energy provision in the diet?

• A. Proteins
• B. Fats
• C. Carbohydrates
• D. Vitamins

Answer: (C)

Carbohydrates are recognized as the primary macronutrient responsible for energy provision in the diet. They are the body’s preferred source of energy, particularly for the brain and during high-intensity physical activity. When carbohydrates are consumed, they are broken down into glucose, which is then utilized by cells to produce adenosine triphosphate (ATP), the energy currency of the body.

Additionally, carbohydrates are stored in the liver and muscles as glycogen, which can be readily converted back to glucose when needed for energy. This efficient conversion and usage make carbohydrates an essential component of a balanced diet, especially for individuals engaged in regular physical activities or those requiring quick energy boosts.

While proteins and fats can also be used for energy, they are primarily utilized for other roles within the body—proteins mainly for tissue repair and growth, and fats for long-term energy storage and insulation. Vitamins, on the other hand, are micronutrients that play crucial roles in various physiological processes but do not directly provide energy.