Which of the following is NOT a cause of hypoglycemia?

The key to understanding hypoglycemia lies in recognizing what typically contributes to low blood sugar levels. Excessive physical activity can lead to hypoglycemia because it increases the body's energy demand and, if not balanced with adequate nutrient intake or carbohydrate consumption, can deplete glucose levels. Insufficient food intake directly impacts blood sugar by not providing enough glucose to maintain normal levels, while alcohol consumption can interfere with the liver's ability to release glucose into the bloodstream, particularly if consumed on an empty stomach or in excessive amounts.

Not enough insulin would generally not be a cause of hypoglycemia. In fact, insufficient insulin administration is more likely to lead to high blood sugar (hyperglycemia) rather than low blood sugar. In people with diabetes, insulin is a critical hormone needed to help cells absorb glucose. Without sufficient insulin, glucose remains in the bloodstream, raising blood sugar levels, not lowering them. Thus, it is clear that not enough insulin is not a factor in causing hypoglycemia.