What is a key effect of exercise on the body for someone with insulin-dependent diabetes mellitus?

Exercise has a significant effect on glucose metabolism, particularly for individuals with insulin-dependent diabetes mellitus. When people engage in physical activity, their muscles utilize glucose for energy, which can lead to improved insulin sensitivity. This means that the body becomes more efficient at using insulin to lower blood sugar levels. As a result, individuals often experience higher energy levels because exercise enhances the body's ability to convert glucose into usable fuel.

While the other choices touch on aspects related to diabetes management, they do not accurately represent the primary effect attributed to exercise for this specific demographic. For instance, exercise does not inherently reverse diabetes complications, nor does it consistently increase insulin needs or liver workload in a beneficial context. Instead, the overall outcome of regular exercise is an improvement in energy metabolism, contributing positively to managing insulin dependency and enabling a more active lifestyle.