Diabetes is a chronic medical condition that affects how your body regulates blood sugar or glucose. Glucose is an essential source of energy for your cells, and its levels in the blood need to be carefully controlled. When you have diabetes, your body has difficulty regulating blood sugar levels, leading to high blood sugar (hyperglycemia) or low blood sugar (hypoglycemia). There are two main types of diabetes, Type 1 Diabetes (insulin dependent) and Type 2 Diabetes (non-insulin dependent).