How does dehydration affect blood glucose levels?

Dehydration impacts blood glucose levels primarily by leading to elevated blood glucose levels. When a person becomes dehydrated, the concentration of glucose in the blood can rise because there is less fluid in the bloodstream to dilute the glucose. This could result in hyperglycemia, where blood glucose levels surpass the normal range.

Additionally, dehydration can impair insulin's effectiveness; as the body is low on water, the efficiency of insulin in helping glucose enter the cells can diminish, further contributing to elevated blood glucose levels. Therefore, proper hydration is important in managing blood glucose levels, particularly in individuals with diabetes, as it can directly influence how effectively the body regulates blood sugar.

The other choices do not accurately capture the relationship between dehydration and blood glucose. Dehydration does have a significant impact, and rather than stabilizing or lowering blood glucose levels, it typically leads to increases in those levels.