The condition in which high blood sugar levels persist over prolonged periods of time in the human body is known as diabetes or diabetes mellitus (DM). Some of its symptoms are increased thirst and hunger, unintended weight loss and frequent urination. These symptoms may vary for Type 1 and Type 2 DM. Headache, blurred vision, fatigue and itchy skin may also occur. Diabetic emergencies can arise in cases of severe drops in blood sugar levels, diabetic ketoacidosis and hyperosmolar hyperglycemic state. DM can also result in long-term complications, such as damage to the eyes, nerves and kidneys, diabetes-related foot problems, cardiovascular diseases, stroke, etc. This book is a valuable compilation of topics, ranging from basic science to clinical practice in the field of diabetes. From theories to research, case studies related to all medical aspects of relevance have been included herein. It will prove to be immensely beneficial to students and researchers in this field.