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

The typical weight gain during pregnancy for a woman with a normal Body Mass Index (BMI) is 25-35 pounds. This range is supported by guidelines from health authorities such as the Institute of Medicine, which provide recommendations based on a woman's pre-pregnancy weight category.

For women with a normal BMI, gaining weight within this range is crucial for supporting the growth and development of the fetus, as well as ensuring the mother's health throughout pregnancy. Gaining too little weight can lead to risks such as low birth weight, while gaining too much can increase the risk of complications like gestational diabetes and hypertension.

Weight gain during pregnancy involves several factors, including the growing fetus, increased blood volume, tissue growth, and the accumulation of amniotic fluid. Thus, 25-35 pounds represents a medically appropriate target that balances these needs for women with a normal starting weight.