Final answer:
A breastfeeding woman has increased needs for protein compared to her nutritional requirements during pregnancy, due to the protein synthesis demands of lactation.
Step-by-step explanation:
A breastfeeding woman has increased needs for protein than she had during pregnancy. During lactation, there is an increased demand for energy as glucose is utilized for the production of lactose, the formation of milk fat, and the synthesis of milk protein casein. It is essential for breastfeeding mothers to ensure adequate protein intake, as colostrum and breast milk are rich in protein, which is crucial for the baby's development. In contrast to pregnancy, where energy and nutrient requirements are also heightened, lactation specifically demands more protein to support the synthesis of breast milk high in this macronutrient.