Blood sugar definition
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Blood Sugar Definition and Key Concepts
Blood Sugar (Glucose) Meaning and Role in the Body
Blood sugar, also known as blood glucose, refers to the amount of glucose present in the blood of humans or animals. Glucose is the main carbohydrate used by the body for energy. After eating, the body breaks down food into glucose, which is then used by cells for energy. When not eating, the body maintains blood glucose levels through processes like gluconeogenesis and glycogenolysis, which produce glucose from other sources or release it from storage in the liver and muscles Jain20202Nasution2025.
Normal and Abnormal Blood Sugar Levels
Normal blood sugar levels typically range between 80 and 120 mg per 100 ml of blood (or 80–130 mg/dL fasting, and less than 140 mg/dL before meals). After eating, blood sugar should be less than 180 mg/dL within two hours. Levels can rise after meals and fall before eating. In mild diabetes, blood sugar can range from 140 to 300 mg/100 ml, and in severe cases, it can reach up to 1200 mg/100 ml. Low blood sugar can occur due to conditions like Addison's disease, insulin administration, hypopituitarism, or hypoglycemia Jain20202Rahmawati2023.
Blood Sugar Measurement and Influencing Factors
Blood sugar is measured using blood tests, often with a glucometer or laboratory systems. Accurate measurement is important, but there can be small variations in results depending on the method used. Hormones like insulin and glucagon, produced by the pancreas, play a key role in regulating blood sugar by helping glucose enter cells or by releasing stored glucose when needed Burrin1990Nasution2025.
Importance of Monitoring Blood Sugar
Regular monitoring of blood sugar is important for identifying metabolic health and preventing complications, especially in people with diabetes. Maintaining normal blood sugar levels helps reduce the risk of infections and other health problems. Community health programs often include blood sugar checks to increase awareness and encourage healthy habits 2Rahmawati2023Nasution2025.
Conclusion
Blood sugar is the level of glucose in the blood, essential for providing energy to the body. Normal levels are tightly regulated, and both high and low levels can indicate health issues. Regular monitoring and understanding of blood sugar are important for maintaining overall health and preventing disease.
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