What is the additional caloric requirement for pregnant women during the third trimester?

During the third trimester of pregnancy, the body undergoes various physiological changes to support the growing fetus. One of the significant alterations is the increase in caloric requirement, which is essential for fetal growth and development, as well as for preparing the mother's body for labor and breastfeeding.

Research indicates that an additional caloric intake of approximately 300 calories per day is recommended during this stage. This amount helps meet the increased energy demands associated with the significant growth of the fetus, including the development of body tissues and organs, as well as to support increased maternal metabolic activity.

It's important to note that this caloric surplus is not arbitrary; it is based on the understanding of energy expenditure during pregnancy and how it varies from pre-pregnancy levels. The other options do not align with these established guidelines, thereby highlighting the necessity for adequate nutrition to support both maternal and fetal health.