What is the primary source of energy for the body?

Glucose is the primary source of energy for the body because it is the simplest form of carbohydrate and is readily absorbed into the bloodstream. When you consume carbohydrates, they are broken down into glucose, which is essential for cellular respiration. This process allows cells to generate adenosine triphosphate (ATP), the energy currency of the cell, which powers various bodily functions and metabolic processes.

While starch is a complex carbohydrate that can be broken down into glucose, it is not directly utilized by the body until it is converted. Fructose and galactose are also types of sugars but they are not the primary energy source. Instead, they must be converted into glucose in the liver before they can be used by the body for energy. Therefore, glucose stands out as the most crucial carbohydrate in maintaining energy levels and supporting overall bodily functions.