What is defined as low blood sugar?

The correct answer for defining low blood sugar is a level of 70 mg/dL or lower. This threshold is widely recognized in the medical community as it indicates the point at which the body's glucose levels are not sufficient to meet its energy needs. At this level, a person may start to experience symptoms of hypoglycemia, such as dizziness, sweating, irritability, confusion, and palpitations.

Most guidelines suggest that blood sugar levels should remain above this threshold to avoid complications associated with low glucose. While other choices present values that indicate lower blood sugar levels, the consensus for clinical significance and management of hypoglycemia is firmly established at 70 mg/dL as the minimum value to prompt intervention and treatment.