World Diabetes Day on November 14 brings attention to diabetes and highlights Frederick Banting's discovery of insulin. Diabetes is a chronic disease characterized by high blood sugar that affects millions worldwide. There are three main types of diabetes: type 1 caused by lack of insulin; type 2 often related to lifestyle factors like obesity and lack of exercise; and gestational diabetes during pregnancy. Diabetes poses serious health risks like damage to organs and limbs and is a leading cause of death and disability globally. Management involves lifestyle changes, medications, and monitoring of blood sugar levels.