Final answer:
Insulin needs for a pregnant woman with diabetes may increase during the second half of pregnancy due to insulin resistance caused by hormonal changes.
Step-by-step explanation:
The insulin needs of a mom with diabetes mellitus (DM) in the second half of pregnancy may require increased insulin treatment. During pregnancy, hormonal changes can lead to insulin resistance, which in turn may necessitate higher doses of insulin to regulate blood glucose levels effectively. This is because insulin works to decrease blood glucose levels after meals by facilitating the transport and storage of glucose, a vital process that becomes critical during pregnancy to meet the growing energy demands of both the mother and the developing fetus.