Diabetes is a disease where the pancreas does not produce enough insulin or the body cannot effectively use the insulin it produces, resulting in high blood sugar. There are three main types of diabetes: type 1, type 2, and gestational diabetes. Type 1 is usually diagnosed in childhood and is treated through insulin injections. Type 2 accounts for 90% of cases and risk factors include obesity and lack of exercise. Symptoms include frequent urination and thirst. Management involves diet, exercise, medication and monitoring blood sugar levels to prevent complications to organs like the eyes, kidneys and heart. Further research aims to find new treatments to better control blood sugar without risk of hypoglycemia.