What is the definition of hypoglycemia?

Hypoglycemia is specifically defined as a condition in which blood sugar levels drop below 70 mg/dL. This condition can lead to a variety of symptoms, including shakiness, sweating, confusion, and in severe cases, loss of consciousness. Blood sugar, or glucose, is the primary source of energy for the body's cells, and maintaining it within a normal range is crucial for overall health.

The other options do not correctly define hypoglycemia. For instance, elevated blood sugar levels (above 150 mg/dL) correspond to hyperglycemia, which is the opposite condition. A high level of insulin in the body may be associated with conditions like insulin resistance or diabetes, but it does not define hypoglycemia. Lastly, stable blood sugar levels indicate a normal metabolic state and are not associated with hypoglycemia, which specifically involves low glucose levels. Thus, the definition focusing on blood sugar levels falling below 70 mg/dL accurately describes hypoglycemia.