Blood Sugars

In this chapter, we’ll explore how your body monitors and regulates blood sugar, focusing on glucose and fructose. You’ll learn what glucose is and why it serves as the body’s primary source of energy. We’ll explain how glucose and insulin work together to keep blood sugar levels balanced—and what happens when this control breaks down. You’ll also discover how doctors test and monitor blood sugar using the oral glucose tolerance test (OGTT) and the haemoglobin A1c (HbA1c) test. The OGTT assesses how your body handles glucose over a short period, while the HbA1c test reflects your average blood sugar over time.