Which monosaccharide is commonly referred to as "blood sugar"?

Glucose is commonly referred to as "blood sugar" because it is the primary monosaccharide found in the bloodstream and the most important source of energy for the body's cells. When you consume carbohydrates, they are broken down into glucose, which is then transported through the blood to be used by cells for energy. The body tightly regulates blood glucose levels to ensure that they remain within a healthy range, which is critical for normal bodily functions. This is why glucose plays a central role in metabolic processes and is often highlighted as "blood sugar" in discussions related to nutrition and health.