What condition is indicated by hyperglycemia?

Hyperglycemia is a condition characterized by an excess of sugars (glucose) in the bloodstream. This situation occurs when the body either does not produce enough insulin or cannot effectively use the insulin it produces, leading to elevated blood sugar levels. Conditions like diabetes mellitus are common causes of hyperglycemia, where insulin deficiency or resistance plays a significant role in maintaining glucose homeostasis.

This definition aligns precisely with the implications of hyperglycemia, making it evident that elevated blood sugar levels are central to understanding the condition. The other options, while related to the general context of blood sugar levels and metabolism, do not accurately define hyperglycemia itself.