Blood glucose level, also known as blood sugar level, refers to the concentration of glucose (a type of sugar) present in the bloodstream. It is an essential parameter in understanding and managing one’s metabolic health. Blood glucose levels are typically measured in milligrams of glucose per deciliter of blood (mg/dL) or millimoles per liter (mmol/L).
Maintaining appropriate blood glucose levels is crucial for overall health, as glucose serves as the primary source of energy for the body’s cells. The body tightly regulates blood glucose levels to ensure that they remain within a narrow range, typically around 70-130 mg/dL (3.9-7.2 mmol/L) when fasting and below 180 mg/dL (10 mmol/L) after eating a meal. These levels can vary based on individual factors, including age, health status, and whether a person has diabetes.
Understanding and monitoring blood glucose levels is particularly important for individuals with diabetes, a condition characterized by chronic fluctuations in blood sugar. Diabetics often use glucose meters and continuous glucose monitoring devices to measure and manage their blood glucose levels, helping them make informed decisions about diet, medication, and insulin use to keep their levels within a target range. Hyperglycemia (high blood sugar) and hypoglycemia (low blood sugar) are both conditions that can have serious health consequences, emphasizing the importance of maintaining blood glucose levels within a healthy range.« Back to Glossary Index