Diabetes is a group of metabolic disorders wherein the blood sugar level is high over a prolonged period of time. Some of its major symptoms are increased thirst, frequent urination and increased appetite. It can cause a large number of complications, if it is not treated in a timely manner. A few of such complications are diabetic ketoacidosis, hyperosmolar hyperglycemic state, stroke, chronic kidney disease, cognitive impairment and damage to the eyes. The diagnosis of diabetes can be conducted by measuring the level of plasma glucose or glycated hemoglobin. The management of diabetes can be done by glucose control and lifestyle changes. This book includes some of the vital pieces of work being conducted across the world, on the diagnosis and treatment of diabetes. It is a valuable compilation of topics, ranging from the basic to the most complex advancements in this field. This book will serve as a reference to a broad spectrum of readers.