What is glucose? Glucose is a type of sugar you get from foods you eat (mostly foods with many carbohydrates). Glucose is also known as blood glucose or blood sugar. Although glucose is essential for your body, too much of it may cause diabetes. Why is glucose so important? Your body needs glucose to make energy. Glucose makes energy for your muscles, liver, heart, and brain. How is the glucose made in your body? When the food gets to your stomach, you start digesting the food. The carbohydrates in your food break down into tiny pieces making glucose. Glucose gets absorbed and travels into your cells and helps to provide energy. More about glucose. Glucose is made up of six carbon atoms, twelve hydrogen atoms, and six oxygen atoms. Glucose has a sweet taste, has no odor, and can be solid or liquid. The chemical formula is C₆H₁₂O₆.

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