Over time, high blood sugar can lead to many health problems. Learn more about what they are and how to prevent them. Learn about normal blood sugar levels, risks of high and low glucose, symptoms, and when to seek medical attention for better health. What is blood glucose? Blood glucose, or blood sugar , is the main sugar found in your blood . It is your body's primary source of energy. It comes from the food you eat. Your body breaks down most of that food into glucose and releases it into your bloodstream. When your blood glucose goes up, it signals your pancreas to release insulin. Insulin is a hormone that helps the glucose get into your cells to be used for energy. What is diabetes? Diabetes is a disease in which your blood glucose ... Explore normal blood sugar levels by age, plus how it links to your overall health and signs of abnormal glucose levels, according to experts.
