Which type of diabetes requires insulin therapy?

Type 1 diabetes requires insulin therapy because it is characterized by the autoimmune destruction of insulin-producing beta cells in the pancreas. This results in little to no endogenous insulin production, which is crucial for regulating blood glucose levels. People with Type 1 diabetes must rely on external insulin administration to maintain their glucose levels within a normal range, thus preventing hyperglycemia and subsequent complications.

In contrast, Type 2 diabetes may be managed initially with lifestyle changes and oral medications, as the body can still produce some insulin, although it may not be used effectively. Gestational diabetes typically resolves after childbirth and is often managed through diet and diabetes medications without the need for insulin unless necessary. Prediabetes indicates a higher risk for developing Type 2 diabetes; however, it does not typically require insulin therapy as blood glucose levels are still within a non-diabetic range.