Which of the following describes a characteristic of IDDM?

IDDM, or Insulin-Dependent Diabetes Mellitus, commonly known as Type 1 diabetes, is characterized by the body's inability to produce insulin due to the autoimmune destruction of pancreatic beta cells. As a result, individuals with IDDM require insulin administration for management of their blood glucose levels throughout their lives.

This necessity for insulin therapy is a hallmark feature of Type 1 diabetes, distinguishing it from Type 2 diabetes, where insulin resistance is more prevalent and management can often begin with lifestyle modifications. Insulin is critical for Type 1 diabetics to effectively utilize glucose, maintain metabolic functions, and prevent significant complications associated with uncontrolled blood sugar levels.

In contrast, the other options do not accurately reflect the characteristics of IDDM. For instance, IDDM does not typically revolve around management through diet and exercise alone, as seen in Type 2 diabetes, nor is it associated with development in older adults, as it more commonly appears in children and young adults. Lastly, IDDM is not considered reversible through lifestyle changes, which emphasizes the chronic aspect of this condition requiring continuous medical intervention.