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Glucose is the Primary Source of Energy for Cells. Glucose is the human body's key source of energy as it provides energy to all the cells in our body. Glucose also is critical in the production of proteins, lipid metabolism and is a precursor for vitamin C production.
Photo Credit Jupiterimages/Creatas/Getty Images. Glucose is an important energy source for your brain and body. Your body converts carbohydrates and simple sugars in your diet to glucose for fuel usage. Your pancreas releases a hormone called insulin to regulate blood glucose levels.