What is immune-mediated type 1 diabetes mellitus?

What is immune-mediated type 1 diabetes mellitus?

• A. A form resulting from autoimmune destruction of pancreatic beta cells, requiring lifelong insulin therapy.
• B. A form due to obesity-related insulin resistance.
• C. A form characterized by beta-cell hyperfunction.
• D. A form of diabetes that resolves after puberty.

Answer: (A)

Immune-mediated type 1 diabetes mellitus occurs when the body's immune system attacks and destroys the insulin-producing beta cells in the pancreatic islets. This autoimmune destruction leads to little or no insulin being made, so lifelong insulin therapy is required to maintain blood glucose and prevent diabetic ketoacidosis. This differs from obesity-related insulin resistance seen in type 2 diabetes, where the problem is the body's response to insulin rather than a complete loss of production. It is not caused by beta-cell hyperfunction, which would imply excess insulin secretion, and it does not typically resolve after puberty because the autoimmune process usually persists and insulin dependence remains.

Immune-mediated type 1 diabetes mellitus occurs when the body's immune system attacks and destroys the insulin-producing beta cells in the pancreatic islets. This autoimmune destruction leads to little or no insulin being made, so lifelong insulin therapy is required to maintain blood glucose and prevent diabetic ketoacidosis. This differs from obesity-related insulin resistance seen in type 2 diabetes, where the problem is the body's response to insulin rather than a complete loss of production. It is not caused by beta-cell hyperfunction, which would imply excess insulin secretion, and it does not typically resolve after puberty because the autoimmune process usually persists and insulin dependence remains.