Glucose is one of the vital substances in the human body. Its main function is to provide the body with energy. Glucose reaches cells through the bloodstream and is broken down there by specific biochemical processes. As a result, an adenosine triphosphate (ATP) molecule is formed, which is considered the most important energy source for the body. ATP provides the energy needed for all biological processes, including respiration, heart rate, muscle movement, and even brain function.
Experts emphasize that glucose is especially important for the brain. Because the human brain requires more energy compared to other organs. Therefore, the amount of glucose in the blood must be sufficient for the proper functioning of the brain and maintaining attention. If glucose deficiency is observed in the body, brain activity slows down, and a person may experience fatigue, dizziness, and even fainting.
In healthy people, the blood glucose level is maintained at a certain level. In normal conditions, fasting blood glucose levels are around 3.9-5.5 mmol/l. If this indicator exceeds the norm, hyperglycemia - that is, an increase in blood glucose levels - is observed. Conversely, if glucose levels drop sharply, hypoglycemia occurs. Both cases are considered dangerous to human health.
Therefore, the body constantly monitors the amount of glucose in the blood. The main role in this process is played by hormones - insulin and glucagon. Insulin performs the function of reducing blood glucose to normal levels when it begins to rise. Glucagon, on the contrary, helps increase blood glucose levels when it decreases. This balance is essential for maintaining stable life processes in the body.
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