There are three major types of diabetes: type 1 diabetes, type 2 diabetes, and gestational diabetes. All types of diabetes mellitus have something in common.
With type 1 diabetes, your pancreas does not make insulin. Insulin is a hormone that helps glucose get into your cells to give them energy. Without insulin, too much glucose stays in your blood.
Causes: Not enough insulin
Hormone replacement therapy for women with type 1 diabetes mellitus. There are increasing numbers of people living with type 1 diabetes mellitus. The main aim of treatment for diabetes is to maintain good quality of life and to minimise, or prevent, the development of diabetic complications by controlling blood glucose levels.
What Is It?
Type 1 diabetes is a chronic illness characterized by the body’s inability to produce insulin due to the autoimmune destruction of the beta cells in the pancreas. Although onset frequently occurs in childhood, the disease can also develop in adults.  See Clinical Findings in Diabetes Mellitus
Type 1 diabetes was also formerly called insulin dependent diabetes mellitus (IDDM), or juvenile-onset diabetes mellitus. In type 1 diabetes, the pancreas undergoes an autoimmune attack by the body itself, and is rendered incapable of making insulin.
Type 1 Diabetes. Millions of people around the world live with diabetes or know someone living with diabetes. The majority have type 2 diabetes, but an important minority have type 1 diabetes (~5%). Contrary to popular belief, type 1 diabetes is not a childhood disease. It occurs at every age, in people of every race, and of every shape and size.
Type 1 diabetes typically presents in childhood or early adult life. It can be distinguished from type 2 diabetes by the presence of immune and genetic markers of immune-mediated disease, and delayed diagnosis may result in diabetic ketoacidosis.
Type 1 is the most common form of diabetes in people who are under age 30, but it can occur at any age. Ten percent of people with diabetes are diagnosed with type 1. In type 2 diabetes (adult onset diabetes), the pancreas makes insulin, but it either doesn’t …
Type 1 diabetes is a disorder characterized by abnormally high blood sugar levels. In this form of diabetes, specialized cells in the pancreas called beta cells stop producing insulin.Insulin controls how much glucose (a type of sugar) is passed from the blood into cells for conversion to energy.