Regular medical checkups are one of the simplest ways to detect silent health problems before they become serious. While many people are familiar with blood pressure monitoring, another equally important test is the fasting blood sugar (FBS) test. This simple test can reveal early warning signs of Diabetes Mellitus and help prevent long-term complications affecting vital organs like the kidneys. In this article, we’ll explore how fasting blood sugar works, what abnormal results mean, and the ripple effect that can lead from high blood sugar to kidney damage and even symptoms like persistent fatigue. What Is a Fasting Blood Sugar Test? A fasting blood sugar test measures the level of glucose (sugar) in your blood after you have not eaten for at least 8 hours. It is commonly used to screen for diabetes and monitor blood sugar control. Normal Ranges: * Normal: 70–99 mg/dL * Prediabetes: 100–125 mg/dL * Diabetes: 126 mg/dL or higher (on two separate tests) Because it is simple, affor...