How many additional calories are recommended for pregnant women in their second trimester?

During the second trimester of pregnancy, it is generally recommended that women increase their caloric intake by approximately 340 calories per day. This increase supports the developing fetus and helps the mother's body adjust to the physical demands of pregnancy.

The rationale behind this specific number is grounded in the nutritional needs of both the mother and the growing baby. As the fetus undergoes significant growth during this phase, additional energy is necessary to sustain healthy fetal development, including the growth of tissues and organs. At the same time, the mother is experiencing changes in her metabolic processes, which also contribute to the increased energy demands.

This recommendation of 340 calories aligns with nutritional guidelines established by experts in maternal health, ensuring that pregnant women have adequate nutrients to promote a healthy pregnancy without excessive weight gain. Following this guidance helps balance the energy needs of the mother and supports optimal fetal growth.

The other options presented do not align with the established guidelines for caloric intake during the second trimester, which makes them less suitable recommendations.