Which statement best describes type 1 diabetes?

Which statement best describes type 1 diabetes?

• A. The body lacks insulin production due to autoimmune destruction
• B. Insulin is produced in excess by the pancreas
• C. The liver substitutes insulin production
• D. The pancreas produces little or no insulin

Answer: (D)

Type 1 diabetes is defined by very little or no insulin production from the pancreas because autoimmune destruction of pancreatic beta cells destroys the cells that make insulin. Without insulin, glucose cannot enter most cells, so blood glucose rises and people must rely on insulin injections to survive. This condition is different from type 2, where insulin is often still produced but the body is resistant to it, or doesn’t use it effectively. The statement that the pancreas produces little or no insulin captures the functional reality in type 1 most directly, which is why it’s the best choice. Saying insulin is produced in excess isn’t accurate for this condition, and the idea that the liver substitutes insulin production isn’t true—the liver does not manufacture insulin. Autoimmune destruction explains why production drops, but framing it as the pancreas producing little or no insulin communicates the actual physiologic status clearly and precisely.

Type 1 diabetes is defined by very little or no insulin production from the pancreas because autoimmune destruction of pancreatic beta cells destroys the cells that make insulin. Without insulin, glucose cannot enter most cells, so blood glucose rises and people must rely on insulin injections to survive. This condition is different from type 2, where insulin is often still produced but the body is resistant to it, or doesn’t use it effectively.

The statement that the pancreas produces little or no insulin captures the functional reality in type 1 most directly, which is why it’s the best choice. Saying insulin is produced in excess isn’t accurate for this condition, and the idea that the liver substitutes insulin production isn’t true—the liver does not manufacture insulin. Autoimmune destruction explains why production drops, but framing it as the pancreas producing little or no insulin communicates the actual physiologic status clearly and precisely.