Diabetes is characterized by impaired insulin production or use, leading to high blood sugar.

• A. Only in type 2
• B. True
• C. False
• D. Only in type 1

Answer: (B)

Diabetes arises when insulin production or the body's use of insulin is impaired, which prevents glucose from entering cells efficiently and leads to high blood glucose levels. In type 1, the immune system attacks and destroys insulin-producing beta cells, so little or no insulin is available. In type 2, the body's cells become resistant to insulin, and the pancreas may not produce enough insulin to meet needs, resulting in insufficient insulin action and rising blood sugar. Because the problem can be due to reduced insulin production, reduced insulin action, or both, elevated blood glucose is a hallmark across the main forms of diabetes. That makes the statement true and not limited to just one type.