Which of the following is NOT a common cause of hypoglycaemia?

• A. Hyperglycemia
• B. Excessive insulin
• C. Missed meals
• D. Excessive exercise

Answer: (A)

Hypoglycemia occurs when blood glucose falls due to factors that either remove glucose from the blood more rapidly or reduce its input. Excessive insulin drives glucose into cells and lowers blood sugar, making hypoglycemia likely. Skipping meals reduces the glucose entering the bloodstream, increasing the risk of low blood sugar. Excessive exercise also uses more glucose for energy, which can drop blood sugar levels, especially for someone on insulin or other glucose-lowering medications. Hyperglycemia, by contrast, raises blood glucose levels rather than lowering them, so it is not a common cause of hypoglycemia.