Which of the following approximate total weight gains is recommended during pregnancy for someone with normal pre-pregnancy BMI?

• A. 25-35 pounds
• B. 11-20 pounds
• C. 28-40 pounds
• D. 15-25 pounds

Answer: (A)

Weight gain during pregnancy is guided by pre-pregnancy BMI, and for someone with a normal BMI the recommended total gain is about 25-35 pounds (roughly 11-16 kg). This total supports the baby’s growth and the maternal changes needed during pregnancy. About 7-8 pounds come from the fetus, 1-2 pounds from the placenta, and a couple pounds from amniotic fluid, with additional weight from the uterus, breasts, increased blood volume, and the formation of fat stores for energy and lactation. When you add these components together, they align with the 25-35 pound range that promotes healthy outcomes for a person starting at a normal weight. Other BMI categories have different targets: underweight individuals may gain more (around 28-40 pounds) to support fetal growth, while overweight or obese individuals gain less (approximately 15-25 pounds or 11-20 pounds, depending on guidelines).