The main source of energy for the human body is carbohydrates. When consumed, carbohydrates are broken down into glucose, which cells use for energy through cellular respiration.
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The primary source of energy for the human body is glucose, a simple sugar derived from the breakdown of carbohydrates in food. When consumed, carbohydrates undergo digestion and are converted into glucose, which enters the bloodstream. The body’s cells then use glucose as a fuel for various physiological functions, particularly in the production of adenosine triphosphate (ATP) through cellular respiration. This energy currency powers essential processes, such as muscle contraction, nerve impulses, and overall metabolism. While the body can also utilize fats and proteins for energy, glucose remains the preferred and most efficient source for meeting the body’s energy demands.