What is the primary purpose of insulin therapy?

The primary purpose of insulin therapy is to replace natural insulin in the body. In individuals with diabetes mellitus, especially those with type 1 diabetes, the pancreas either does not produce insulin or produces insufficient amounts. Insulin is crucial for the regulation of blood glucose levels, as it facilitates the uptake of glucose by the body's cells, allowing them to utilize glucose for energy.

By providing an external source of insulin through therapy, healthcare providers can help manage blood sugar levels effectively, preventing the complications associated with uncontrolled diabetes. This management is essential for maintaining metabolic homeostasis and reducing the risk of both acute and chronic complications of diabetes.

Other options, while related to insulin therapy, do not accurately reflect its primary purpose. Insulin therapy is not intended to cure diabetes, as there is currently no permanent cure. Rather, it serves as a continuous management option for the condition. Additionally, insulin therapy is designed to lower blood sugar levels, opposing the statement that it increases them. Lastly, while insulin is involved in the metabolism of dietary glucose, the therapy itself does not serve to supplement dietary glucose, but rather, it helps the body utilize glucose more effectively.