Pregnant women require essential nutrients to support both their health and the development of the fetus. Key nutrients include folic acid, which helps prevent neural tube defects, iron for increased blood volume, and calcium to support bone development. Additionally, adequate intakes of omega-3 fatty acids, primarily from fish, are crucial for brain development. A well-balanced diet that includes fruits, vegetables, whole grains, proteins, and healthy fats is vital during pregnancy to ensure that both the mother and baby obtain necessary vitamins and minerals.