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Glucose is the main source of energy of the brain. It is converted to ATP inside the brain. However, the brain cells (neurons) themselves use some glucose. The other gluco â¦ se is first metabolized and converted to Lactate by cells inside the brain called Astrocytes. The lactate produced will then enter the neurons and then is converted to ATP.
Glucose is the Primary Source of Energy for Cells. 1  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. Glucose is the sole source of fuel to create energy for all brain and red blood cells. The availability of glucose influences many psychological processes. When glucose levels are low, psychological processes requiring mental effort l(self-control, critical thinking and decision-making) become impaired.