Which type of diabetes occurs when the body does not produce insulin and is often inherited?

Diabetes Mellitus Type 1 occurs when the body does not produce insulin due to the autoimmune destruction of insulin-producing beta cells in the pancreas. This form of diabetes typically manifests in childhood or adolescence, which is why it is often referred to as juvenile diabetes. It is largely considered to have a genetic basis, as individuals with a family history of Type 1 diabetes may have a higher risk of developing the condition.

In contrast, gestational diabetes typically occurs during pregnancy and usually resolves after childbirth, while diabetes mellitus Type 2 is often associated with insulin resistance and is related to lifestyle factors and obesity. Type 3 diabetes is not a medically recognized term that refers to a specific form of diabetes; it is sometimes used informally to describe conditions like Alzheimer's disease as it pertains to insulin resistance in the brain, but it does not pertain to the classic diabetes types discussed in medical literature.