What caloric increase is recommended during the second trimester for pregnant women with a normal BMI?

During the second trimester, it is recommended that pregnant women with a normal Body Mass Index (BMI) increase their caloric intake by approximately 350 additional calories per day. This increase supports the growing demands of both the developing fetus and the changes in the mother’s body, such as increased metabolic rate and uterine growth.

Research and nutrition guidelines indicate that while the energy needs during pregnancy vary from trimester to trimester, the second trimester specifically requires this moderate bump in calories to ensure adequate fetal growth and development. The additional caloric intake is intended to contribute to an increase in placental function and overall fetal nutrition without leading to excessive weight gain for the mother.

Understanding the physiological changes during pregnancy can clarify why 350 calories is appropriate, as it provides a balance that promotes healthy gestation while minimizing risks associated with undernutrition or overnutrition. The recommendations are thus designed to support optimal health outcomes for both the mother and baby.