What is the expected weight gain for a woman with a normal BMI during pregnancy?

The expected weight gain for a woman with a normal Body Mass Index (BMI) during pregnancy is generally considered to be between 25 to 35 pounds. This range is based on guidelines from various health organizations, which indicate that women who start their pregnancy within the normal weight range (BMI of 18.5 to 24.9) should aim for this amount of weight gain to support the health of both the mother and the developing baby.

This recommended weight gain is important for several reasons: it provides the necessary nutrients and energy for fetal growth and development, supports an increase in blood volume, amniotic fluid, and maternal fat stores. Gaining within this range helps ensure that the mother does not gain too much weight, which can lead to complications such as gestational diabetes, hypertension, and difficulties during delivery, while also ensuring that the baby has sufficient growth and development potential.

The other ranges listed in the options do not align with the established guidelines for women with a normal BMI. Therefore, focusing on the 25-35 pounds range allows for a tailored approach that takes into consideration the health of both the mother and the infant during the critical period of gestation.